Malicious PDF — malware analysis report

Static analysis result for SHA-256 2464bab1ebc3e8f2…

MALICIOUS

PDF

90.8 KB Created: 2021-05-28 09:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 43f0efdf8c1ded73018e9216a6866300 SHA-1: e38c6ce560cbdabfd0b3f156568fc4482f3af451 SHA-256: 2464bab1ebc3e8f24336379e0dd528568571cb62210a31935c002dc8ea499763
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a technique commonly used in phishing campaigns or to distribute malware. The 'PDF_SEO_LINK_FARM' heuristic specifically indicates a mass of external links, suggesting a malicious intent to redirect users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dafemum.ru/123?utm_term=xiaomi+eu+mido PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426820/normal_5fe3477d9350e.pdfIn PDF document text
    • https://kakulekatorud.weebly.com/uploads/1/3/4/6/134681497/wubawuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473044/normal_5ff3f3a0b42f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375503/normal_6004eafb8d793.pdfIn PDF document text
    • https://fusodozot.weebly.com/uploads/1/3/4/0/134096428/f91e01c8.pdfIn PDF document text
    • https://gawokuvaz.weebly.com/uploads/1/3/4/6/134656265/b2b043443bfa6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495854/normal_5ff1458b24b2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_604fb93916720.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8df7386b-1dae-46b1-b99d-8681b34786b0/2011_nissan_sentra_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13fab815-4605-4fa1-97f2-175234a7e815/vb.net_tutorial_video_full_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c16953-d5a2-4a11-b31b-19a38ea2f90e/91491192425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa53f22-5caf-45d0-8ef2-8fe31be5f843/wegafude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91b5fb84-50e5-45fe-913b-73043cb69260/25506250600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/370628c2-49b6-4ea5-ae62-6c6154b92fe1/xawarujogilosad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62999964-ac28-42a5-bf4c-26d8460c0f3b/troy_bilt_repair_shop_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdd994a0-e01d-447c-8abd-9eaa5ff706c6/can_i_use_python_in_arduino_ide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4437100-bad1-4f28-b31d-4a1cd79c8b8d/dell_inspiron_n5010_laptop_configuration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44ebc6d0-acec-4dea-a4c2-900b0fb31ade/84903710776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5df66db0-964d-4abc-948c-9ee71644e830/1897098711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d15723-64a4-4c9c-87d8-9056af2d38f6/social_studies_national_standards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64a6b52b-b7d1-4f65-9df5-b51cf71c6f43/what_song_has_the_most_streams_on_soundcloud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d2c3d5c-fb96-4352-a537-79bd7ce5521a/11414675879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d493fb2a-4d61-40ef-bc65-ba8d92217fc9/panasonic_expandable_cordless_phone_system_with_answering_machine_and_call_block.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f59f506-257b-4454-a094-13114a283de1/wolewedunib.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF558 3664 bytes
SHA-256: 721f215e6ddc28735bd623c2394ceb2c3090c2eb2a5de9f945b936f6d3153f3d
font_01_sfnt_off00010206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10206 4640 bytes
SHA-256: 35fc6cbadba2d00ab7dd419e0d043f88a8d3c53b56ece73a19d92bf5a4f308c8
font_02_sfnt_off000111af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AF 4264 bytes
SHA-256: e351a03adc8de8524c00f96aa2c7e430475d926f16f9c1a8c8433ad71254b647
font_03_sfnt_off00012200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12200 10896 bytes
SHA-256: 6a68137952efc38732bfc00403f40789a54202448b72e5fedae96dfe5ed9190c
font_04_sfnt_off0001478f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1478F 16148 bytes
SHA-256: f77bf90f532b7c21f92f5d5a954ddae68b4313ab1692d0bb743fda9813f06063

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