Malicious PDF — malware analysis report

Static analysis result for SHA-256 54c817893f6355e6…

MALICIOUS

PDF

46.5 KB Created: 2020-09-19 15:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9b572d7a8abbb22e9b3b62ea96cb5ba SHA-1: 28c409a2dc18f50cfe9e07345e6eaaa94300915b SHA-256: 54c817893f6355e673e1a35e2988f366532721b5ef181ca26ee36ae81f2a13f0
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, indicating an attempt to direct users to harmful content. The document body, though heavily obfuscated, contains text related to 'Frontier tv guide' and a URL that matches the malicious redirector, reinforcing the lure. The presence of multiple PDF links suggests a broad distribution or SEO poisoning tactic.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.link/wix?keyword=frontier+tv+guide+venice+fl
    • http://files.brookwoodcounseling.com/uploads/1/3/1/4/131453021/094f885f6.pdf
    • http://files.nineravensstudio.com/uploads/1/3/0/8/130874160/fd7a075e0d826a2.pdf
    • http://files.mrsbscusd.com/uploads/1/3/1/4/131407155/zonutidigobi.pdf
    • http://rawafevu.mrgennrich.com/uploads/1/3/1/4/131411688/sesubuxa_vagabodeso_demekibe_buwiwadode.pdf
    • http://pedomefi.redlineinstallers.com/uploads/1/3/2/6/132680981/jojufunijovowewobu.pdf
    • https://0a6b6805-763a-43f0-b7e8-2effe0ddcf93.filesusr.com/ugd/a37a2e_bc24a30ae7d2481dbdc959e0289ab537.pdf?index=true
    • https://b95cf443-569b-48ea-960c-4317bb17ba59.filesusr.com/ugd/0dd040_da98c0adbb0c497cb003bcde0cd616fe.pdf?index=true
    • https://e71e57b2-c687-4379-9f32-6edd1fd31abb.filesusr.com/ugd/f59309_3f3a7c1b112242c5a388a67f2282fc38.pdf?index=true
    • https://03263d72-f8f8-46cd-9477-aaf37e0fa6e8.filesusr.com/ugd/2eec94_5f15b9d9864648609603897234ac08b3.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/5093/4173/files/caterpillar_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/vuwibuvoje.pdf
    • https://cdn.shopify.com/s/files/1/0478/9993/4886/files/pandora_one_paid_apk.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007951.bin
63368e1bfda8453ec33a7e4237c7fbbaa6c19f310bf771e6591e6e9b465b4124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7951 4816 bytes
font_01_sfnt_off000089d9.bin
870df30c8526ab18d49c5d0aa4403e7f0348688c2d9a43054203e7f59e5add8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89D9 10436 bytes

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