Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ca1e70480cf392…

MALICIOUS

PDF

76.3 KB Created: 2021-03-30 02:29:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f0f291e6cf58dde694765b1e2a3bca4e SHA-1: 504c7d705832a4ed2a48f96df510160c6dde6264 SHA-256: 48ca1e70480cf392e8139fbfa37cd24414520b14a3005fbfe79b70125d456a9f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/wix?keyword=mario+sheet+music+flute PDF link annotation
    • https://cdn.sqhk.co/zuzipogowita/eqigIii/101_espn_pick_em_challenge.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/FjbdAQV/badminton_league_mod_apk_hack_android_1.pdfIn PDF document text
    • https://kuvikopar.weebly.com/uploads/1/3/4/8/134870245/2908379.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/ebVGFkh/lezanodekawuwokaguj.pdfIn PDF document text
    • https://taruwimogepumo.weebly.com/uploads/1/3/4/3/134331568/1103113.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/heifjfR/wechat_payment_processing.pdfIn PDF document text
    • https://wabelurotetef.weebly.com/uploads/1/3/4/6/134693048/jupiduluju_bikubisofujeget.pdfIn PDF document text
    • https://cdn.sqhk.co/tulotunofuz/0ig0oJE/25478412237.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
    • https://uploads.strikinglycdn.com/files/0a343cad-3636-4f9a-ad92-e960ca72cff8/dmlt_microbiology_notes_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/6066456699.pdfIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_970cdb3eec204cde890ec75595b345ff.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1914c45-e143-450a-95f9-44d99c78f52e/56554119210.pdfIn PDF document text
    • https://c751e6e8-0850-424d-b14e-d7ae46260796.filesusr.com/ugd/bc1028_95929904212746bca6b861871ed0b285.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefodek/aws_kinesis_firehose_cloudformation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c253331-bea4-4366-baeb-e7038bb1fa5a/how_do_i_become_a_computer_network_engineer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91dc3545-c1b9-4800-86e9-dc86b5072101/53186603190.pdfIn PDF document text
    • https://a2fe464c-28d1-4db8-bb2d-552ad9bc2f4d.filesusr.com/ugd/941bb1_51107d5f489e4fe5a1c21305bc3eabef.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BA 4904 bytes
SHA-256: 95697e9f9bf5807122264198d1acb582f1398e610821cbdcb088b9458cd8f6e9
font_01_sfnt_off0000f16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16F 10704 bytes
SHA-256: f046ddfaffdac5b37eb7abc726fc5b4cbad05a2a9e9213ec2f7ee0be951f14c7
font_02_sfnt_off00011610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11610 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.