Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff2d87e38cf73c2…

MALICIOUS

PDF

41.2 KB Created: 2020-08-14 14:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c6da01a8ca51995e88d35fa149901a9 SHA-1: a49220cedd2e940c26a66c5f6a8b67f2123136a3 SHA-256: eff2d87e38cf73c25456a6d3b418b84c12e747700f473dd9611fd8623c26d577
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a critical redirector link to 'https://ttraff.cc/pify?keyword=attestation+de+salaire+accident+de+travail+pdf'. This suggests a phishing or social engineering attack aiming to redirect the user to malicious content. The document body, though heavily obfuscated, also contains references to the redirector URL and numerous other PDF files hosted on Shopify, indicating a link farm strategy.

Heuristics 3

  • 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.
  • 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=attestation+de+salaire+accident+de+travail+pdf
    • http://fesumojoj.driggspleinair.org/uploads/1/3/1/6/131606552/dulujo-tomixorirasogi.pdf
    • http://files.empoweredspirits.com/uploads/1/3/0/7/130738637/4ae4e9caef.pdf
    • http://files.brushworxstudio.com/uploads/1/3/1/4/131483067/sopaxovuxejinevixijo.pdf
    • http://files.dodici-azpadu.com/uploads/1/3/0/7/130739059/biratekobes-safam.pdf
    • https://cdn.shopify.com/s/files/1/0428/8079/4780/files/bivusinedunotujavar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/gasifemezurunexiborigoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4178/files/kawiwesave.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/wifugiroguropowilated.pdf
    • https://cdn.shopify.com/s/files/1/0430/5443/2410/files/69924872431.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/3495954263.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/relaminibido.pdf
    • https://cdn.shopify.com/s/files/1/0431/4673/9866/files/jopojodoxasukukoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/70600077132.pdf
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/43737318054.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_off00006050.bin
af1722ca1c34c1cf987f8e29d3b2475cf5611470454c5b85afebae6e79996295		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 5196 bytes
font_01_sfnt_off0000720f.bin
6d1fc3724b2d6e9cda0492edad39e1f27a75005a8da54dce945cf162ef559663		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720F 11076 bytes

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