Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d68f7ff2d4e4055…

MALICIOUS

PDF

42.7 KB Created: 2020-08-25 17:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4abb881fb610d9ea2e3c8d7d6358e98a SHA-1: 18fa24a019b33ab19852b636491bdd5ba7005e89 SHA-256: 9d68f7ff2d4e405557bf78543b57884f88e0ed94df92c847db501a57f069e321
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=commas+practice+worksheet+pdf', suggesting a lure to a malicious site disguised as a worksheet. The presence of numerous links indicates a link farm or SEO poisoning attempt to drive traffic to malicious infrastructure.

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.com/pify?keyword=commas+practice+worksheet+pdf
    • http://vumonimow.primarytackle.com/uploads/1/3/0/9/130969368/futajamujode_mutuzixa.pdf
    • http://files.rwaayersfacultysite.net/uploads/1/3/0/7/130775156/4183ed226.pdf
    • http://files.desertdancetheatre.org/uploads/1/3/1/4/131453945/zutalifaxijusub.pdf
    • http://files.furrytailspetgroomingschool.com/uploads/1/3/2/3/132302924/gedokizede_xivodim.pdf
    • http://files.cheekycanvas.com/uploads/1/3/1/0/131070520/nafir_gebam_fifabavagul.pdf
    • https://cdn.shopify.com/s/files/1/0437/1293/8152/files/acog_guidelines_for_abnormal_uterine_bleeding.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/38514761451.pdf
    • https://cdn.shopify.com/s/files/1/0433/6428/6618/files/24226895780.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/wanodabigenazawazavopaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/9593/9488/files/lerini.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/how_to_update_minecraft_forge.pdf
    • https://cdn.shopify.com/s/files/1/0437/4023/3880/files/acg_guidelines_gi_bleed.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/watch_dogs_2_skidrow.pdf
    • https://cdn.shopify.com/s/files/1/0430/5793/8581/files/88265395328.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/dsm_5_bipolar_1_disorder.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/new_american_bible_catholic.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/81168299413.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_off00006822.bin
b6ec96d9b33bc4fa1597d98dafb0372d29dabdbfbfb9f9a85440d27cc9459d03
pdf-font-stream PDF embedded font (sfnt) at offset 0x6822 5424 bytes
font_01_sfnt_off00007a7c.bin
b5f6801d4df5411d10342512442cd53768c3cff4197f148d20f0e1274f6d71d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7C 10456 bytes