Malicious PDF — malware analysis report

Static analysis result for SHA-256 3546e3fa7c5e2010…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 17:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a941261d09288585c227ff708b99d76e SHA-1: c44c6dc26aeb7724e9bae2f4ae099ad5afd052ab SHA-256: 3546e3fa7c5e2010b589d91878ccbee147d2acb68c77b08f32d69d18fcbf33b0
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to a "Military timesheet with minutes" and embeds a significant number of links to external PDF files. One of these links points to a known malicious redirector, and the overall structure suggests a link farm, likely for SEO poisoning or to distribute further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=military+timesheet+with+minutes
    • http://files.lovedrunklife.com/uploads/1/3/0/7/130775729/binelikerofobowaw.pdf
    • http://files.fiedlerdentistry.com/uploads/1/3/0/7/130775092/8627923.pdf
    • http://files.coldwatersoapco.com/uploads/1/3/2/7/132740214/gefizupa.pdf
    • http://files.scituatefarmersmarket.com/uploads/1/3/1/6/131636725/3034842.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/19436195637.pdf
    • https://cdn.shopify.com/s/files/1/0448/1653/1617/files/lamakukasi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5565/0718/files/aldi_nord_angebote_prospekt.pdf
    • https://cdn.shopify.com/s/files/1/0431/2524/4053/files/gupuzotixiximewupenodal.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/garen_mid_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/32794067219.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/78731333436.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/92514720914.pdf
    • https://cdn.shopify.com/s/files/1/0434/8972/2534/files/alligation_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0727/files/attestation_de_formation_en_maintenance_informatique.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ranugebiwuzejivuzuf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f64.bin
2da0db43b08a74bbd5148a04bacf414b84ae2976d227ae966155b5d4d36e3eb3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 4896 bytes
font_01_sfnt_off00006fea.bin
e84853fb8a1d6d5fc40552b743f1892b69658594a8c2d183b541b44af6ec06d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEA 10300 bytes
font_02_sfnt_off0000932d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x932D 4324 bytes