Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6df68a76e8f57c…

MALICIOUS

PDF

60.2 KB Created: 2020-10-17 07:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: af3fb8f6bac81937a5118b03adcaef3e SHA-1: 78af61993c48c24010da2cc43e07a0f38a2d5426 SHA-256: dd6df68a76e8f57cb4d7561a2761c521be82be4ac772c3ee4eb6ca43b6e1aa24
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector's target. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm used to distribute malicious content or improve SEO for scam sites. The ML classifier also strongly indicated maliciousness.

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.club/123?keyword=wireless+headphones+with+microphone+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5f8744ee57535.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f882c7283a30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f89f4de454f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f8a6d99a04f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5f8a1c29cf4f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5f8921ba01c7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f8a1f741f49e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5f899488b75d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/76880850265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6850/8310/files/regal_cinema_colonie_center_albany_new_york.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9479/files/zazajilopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9324/4069/files/dapuwufagasuvipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32007695-c9c3-4e85-80e1-9de01915bf97/vovinexewepalexisimijeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eda71f4-3d2c-4f24-9a8f-89da1caece1a/kuzozifulaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13d7f76e-d710-43a1-b059-2899b011ca14/gesepoturijajejelilov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1977/1297/files/tymora_goddess_of_good_fortune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2360/0286/files/canon_rebel_xti_quality_settings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/south_mountain_state_park_trail_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f69c512e-c1d7-402f-adce-6b04e79fda85/lexovuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/558c3536-8f54-422b-8536-775aeee7d8fe/vatazukobexebagazoxuxiri.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_off0000acb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACB7 5500 bytes
SHA-256: 889b46ef75f3b944f87cb7d9b901dda2e9cc318dd307f5caf330ddedfb67006e
font_01_sfnt_off0000bf4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4F 10540 bytes
SHA-256: 2e93adc740a7e0df268334e912188be03e615b2ef7fffc6c3dd4f1f8b0e86b47

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