Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9205cb3e2dae73…

MALICIOUS

PDF

83.5 KB Created: 2020-12-30 06:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 296761ca22250cd90967d33d886ffdb0 SHA-1: 94892487d955d588a7778fee69f003df8b2689a1 SHA-256: fa9205cb3e2dae730b25b65c6ea41142c7925e259c9380a88f096abbd6d00955
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9996

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://traffking.ru/123?utm_term=ff14+carpenter+leve+kit PDF link annotation
    • https://cdn.sqhk.co/jobiwokojo/0B3hcAC/idle_pocket_crafter_mod_apk_0._9._858.pdfIn PDF document text
    • https://gebogezajir.weebly.com/uploads/1/3/4/6/134685536/53107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421042/normal_5fab1b4ee084b.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/144ea740a.pdfIn PDF document text
    • https://bitekiparoduj.weebly.com/uploads/1/3/4/0/134017536/gapomutuwama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478928/normal_5fc0319beb6dd.pdfIn PDF document text
    • https://cdn.sqhk.co/kenalexuvexu/URii3gg/age_calculator_app_free_download_for_pc.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://s3.amazonaws.com/pesetufavo/chinese_character_practice_sheet_with_pinyin.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/manual_for_roomba_600_series.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/41761667649.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/fuvelanitiwibe.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/dizanozeroziguw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66e8a336-ab9f-4bef-9897-1cd0edf47d5c/57579763853.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED92 3244 bytes
SHA-256: 74f8d12cbef5a8dc4862e862f4233220dee491c583c713b8cbe8826d1badf724
font_01_sfnt_off0000f94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94E 4728 bytes
SHA-256: fc672906aa920c5aac583b6ce11e4b9715e6f7f4a0959d28667858230bf54464
font_02_sfnt_off0001096e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096E 11964 bytes
SHA-256: a3f5dc3f6ca2c14da9af51507f2ba784fc829b71f3eea0b172456b3b71b75568
font_03_sfnt_off000130c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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