Malicious PDF — malware analysis report

Static analysis result for SHA-256 74af0aa95035283d…

MALICIOUS

PDF

73.9 KB Created: 2020-12-29 11:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c9588cbe07db195f508484a04f028148 SHA-1: 9313389cb1e06715bf5c9cee9f5b5a2adeced4f5 SHA-256: 74af0aa95035283d7876c17faa382c6b1a92f0975bb975e82f3e20bb2dc6a0bf
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of embedded links, with at least one identified as a known malicious redirector. The presence of numerous links suggests an attempt to direct users to potentially harmful websites, possibly for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?utm_term=msi+pe60+7rd+drivers In PDF document text
    • https://bovuxugiz.weebly.com/uploads/1/3/4/9/134901291/fogakewu_jodifewi_xibapopidig_vebuwozedufip.pdfIn PDF document text
    • https://cdn.sqhk.co/zozijawutuxu/0ghsjcY/zilojovuberomatidupife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505687/normal_5fbbad6e23e7f.pdfIn PDF document text
    • https://rezigetofetima.weebly.com/uploads/1/3/1/1/131163738/de62271d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486535/normal_5fd646f80a5e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_5f9580060f8ad.pdfIn PDF document text
    • https://zogewuvenofo.weebly.com/uploads/1/3/2/6/132683334/kumutedexot.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/8rsjjc1/gilobobadegiwe.pdfIn PDF document text
    • https://gonuxatokudegi.weebly.com/uploads/1/3/2/6/132695329/1196084.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/binomo_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/someone_like_you_piano_sheet_music_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/ielts_speaking_cue_cards_with_possible_answers_download_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/unblocked_games_for_peasants.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/85443421657.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE650 5152 bytes
SHA-256: a5aaca3b252ca33588c4cff2fad47abc0d270b01b5525dbae24db702b810ae3d
font_01_sfnt_off0000f803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF803 10232 bytes
SHA-256: 0ab2285ce6d23f9d7407c9f01f267869718c150ed4e35da1806d487666abf225

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