Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0255de069168261…

MALICIOUS

PDF

74.5 KB Created: 2021-03-21 04:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9d59f51543fbdc0cc9d5322a3fc953f6 SHA-1: 44226c8bf1ef0836e492b5a0cb05fa2c70566700 SHA-256: f0255de069168261669e62df59d26524538300236cfa621f14f96b4c802b6adf
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to lead users to potentially harmful content hosted on external domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://pelibifir.ru/wix?keyword=wholphin+loves+narluga PDF link annotation
    • https://wanevowak.weebly.com/uploads/1/3/4/4/134465130/jitexekonurozux.pdfIn PDF document text
    • https://nezivubu.weebly.com/uploads/1/3/1/3/131384481/1bcecca67d1eb7.pdfIn PDF document text
    • https://misetibu.weebly.com/uploads/1/3/1/4/131438078/346148.pdfIn PDF document text
    • https://kejarokelevu.weebly.com/uploads/1/3/5/2/135297316/651755.pdfIn PDF document text
    • http://sezejawi.mypressonline.com/88826057261.pdfIn PDF document text
    • https://wenojuzak.weebly.com/uploads/1/3/4/2/134265903/284228.pdfIn PDF document text
    • http://wulutano.mywebcommunity.org/fofexulogivatewa.pdfIn PDF document text
    • https://patosalar.weebly.com/uploads/1/3/1/3/131384166/livimog_fekor.pdfIn PDF document text
    • https://wozavosasegug.weebly.com/uploads/1/3/4/5/134509229/deniwutanuwexeg_xivogogefuso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vidilig.onlinewebshop.net/80058122403.pdfIn PDF document text
    • https://51bf459c-6b46-41b0-863f-532cf8a77e0d.filesusr.com/ugd/2eedf1_2f7bef20c8c545b5bac3fd03c03667b9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujapu/23445346428.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/how_do_i_become_a_certified_medical_interpreter.pdfIn PDF document text
    • https://25f35837-e8ad-4357-b490-8f69bec4165a.filesusr.com/ugd/96c61c_4f82166178c1426fb19f80c8122a2e72.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/chocolate_cookies_bbc_good_food_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/pediatrician_nelson_manickam_road.pdfIn PDF document text
    • https://203aa715-7352-46b1-b16b-5d0aeeaa27a2.filesusr.com/ugd/0582e0_c9710771c3c0416f9a8ef2cf16dc8fd1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/51718938625.pdfIn PDF document text
    • http://tofujuwo.onlinewebshop.net/peningkatan_kualitas_sumber_daya_manusia.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/45705108239.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/gazela_rose_tech_sheet.pdfIn PDF document text
    • https://4c2674ec-1430-4cec-a455-d6a35d10586e.filesusr.com/ugd/38955b_a0185c4236f34cb789f681e433e9a0e9.pdf?index=trueIn PDF document text
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_f7ff788eebc84191a3aaa853a7c949be.pdf?index=trueIn 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFF 4956 bytes
SHA-256: f7bd7b333d5d18df093c631aa955d2790176f37641b02537d2f64149824ddbcc
font_01_sfnt_off0000ddca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCA 1936 bytes
SHA-256: 19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f
font_02_sfnt_off0000e710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE710 10968 bytes
SHA-256: 083b442df2f8d37133a22957b25325776d1841ba6983f4b55b0f0b90a7d5972c
font_03_sfnt_off00010bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD6 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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