Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d431bf6010084b…

MALICIOUS

PDF

41.8 KB Created: 2020-08-09 14:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02a2a82826bf1378f2f475db0b9b23ae SHA-1: 6cdc829df300c613669d0631c2a3989161232c9a SHA-256: a2d431bf6010084b7491b7e1406d249fc789ae528f296bdf6e42845a26cd3217
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs, suggesting a lure to download further content. The presence of a 'download button' heuristic reinforces the social engineering aspect of this attack.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=geometric+design+of+highways+and+streets+pdf
    • http://jamunafux.rockofoakland.com/uploads/1/3/1/3/131398140/53b6a.pdf
    • http://files.xpressitnow.com/uploads/1/3/0/8/130873856/zidisosejoja-xegapol-vazugimekep.pdf
    • http://files.williampeskett.com/uploads/1/3/1/3/131379699/8700188.pdf
    • http://files.fairplaylabradors.com/uploads/1/3/1/3/131379049/waxeruzagire_wimavamofik_fifobe.pdf
    • http://files.heartlandcustomfarmtoys.com/uploads/1/3/1/4/131453645/molotenaxawamova.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/52182911184.pdf
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/mijoworuzop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/66423776059.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/nuxaxolu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/hayward_pool_filters_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/lyrical_ballads_wordsworth_coleridge.pdf
    • https://cdn.shopify.com/s/files/1/0432/1620/8036/files/wexufijelixelavul.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/90414950956.pdf
    • https://cdn.shopify.com/s/files/1/0435/5312/8612/files/budinedi.pdf
    • https://cdn.shopify.com/s/files/1/0436/5592/1822/files/illness_anxiety_disorder_dsm_5.pdf
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/sokapinafusuwarunepilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/59645152170.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/docker_remove_all_images.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.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_off000063a0.bin
1a948b4db74d7e3f0acb24021ca768a1fcc53172287b535bfd021190e4f45969
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A0 5764 bytes
font_01_sfnt_off00007732.bin
61f1e9022e71f9d18794f537863ac735016c72dedd394b075c5dac0f17e73636
pdf-font-stream PDF embedded font (sfnt) at offset 0x7732 10120 bytes