Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d33e611cf1ab067…

MALICIOUS

PDF

42.6 KB Created: 2020-08-21 22:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c86d91df46ece0cc569ca21db026cc70 SHA-1: 6ad71ce4ec0cdeb17f6940876784df11e1c6bdf9 SHA-256: 7d33e611cf1ab0670906f23472674b828d12804620ab71effb253796cbe22df7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The primary malicious link, https://ttraff.cc/pify?keyword=fashion+color+matching+guide, is designed to lead users to potentially harmful content. The presence of numerous other PDF links suggests an attempt to distribute or obscure malicious content through a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.cc/pify?keyword=fashion+color+matching+guide
    • http://koderosa.seanjmnewman.com/uploads/1/3/0/7/130740450/lixoj-dapuxidoguv-xilexofekileweg.pdf
    • http://files.nicoleangelique.com/uploads/1/3/0/9/130969818/bb5686.pdf
    • http://files.keithlienert.com/uploads/1/3/2/6/132681192/kotimi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/ditomugodotemoveravaxuvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/avanguardia_gelato.pdf
    • https://cdn.shopify.com/s/files/1/0430/2818/5239/files/fiwejuvegavajimikatoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3609/files/18584613037.pdf
    • https://cdn.shopify.com/s/files/1/0429/5802/8959/files/82356481493.pdf
    • https://cdn.shopify.com/s/files/1/0438/5597/0454/files/66680943084.pdf
    • https://cdn.shopify.com/s/files/1/0432/1558/5448/files/ancient_china_map_activity.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/gwent_card_crafting_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/94919382773.pdf
    • https://cdn.shopify.com/s/files/1/0438/3549/0466/files/aararo_aariraro_song_video.pdf
    • https://cdn.shopify.com/s/files/1/0437/8951/6958/files/20169723976.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/69348102255.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/gekulilifubezubepaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/velivozagupixur.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006931.bin
c042fb4214bb4f99e0d5c0290b07b5253ec629f36f8ff039e80ddea4ab9f173c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6931 5308 bytes
font_01_sfnt_off00007b01.bin
22be33fd908db9ef7fbaf81500c990924721695e89144b3bb3a694934e38e6bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B01 10024 bytes

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