Malicious PDF — malware analysis report

Static analysis result for SHA-256 72dff72612aa3d2d…

MALICIOUS

PDF

39.6 KB Created: 2020-08-30 22:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 379b280f02ecf085894ede688fade07b SHA-1: d1e8bcf5af905ab0e10c291a9294d370762193a9 SHA-256: 72dff72612aa3d2df239d4b99a53a20e798ef1b6d9972d947008d80d62117725
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are to benign Shopify URLs but one is to the malicious redirector. The presence of urgency language further supports a phishing or scam attempt. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=kroll+ontrack+data+recovery
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/combining_like_terms_worksheets_7th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7696/files/73342959219.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/gakojuniledosuxolobojafim.pdf
    • https://cdn.shopify.com/s/files/1/0463/3024/9377/files/nice_boy_baby_pic.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/pitman_probability_solution.pdf
    • https://static.usrfiles.com/ugd/67f5f7_eccc2141c1454c31982bee4c06b90802.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdfa90182a5d4bc28e25f13ed5d7ec77.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0bad03dd9e14df385d2d34b03e16fb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd99668bcb474cd1811b69bb9332fe57.pdf
    • https://static.usrfiles.com/ugd/353d00_f15fd580a5b34c44bd3dcbed9d9e182f.pdf
    • https://static.usrfiles.com/ugd/0e9fc2_25ddfe658be840c882276ac380f99d9a.pdf
    • https://cdn.shopify.com/s/files/1/0436/3275/4841/files/samsung_300k_tool_download_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/biological_weapons_convention_1972.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/mubejadagenatabot.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e7e.bin
346b7b291dccb0c3dbdecebc909daa052e1490fcb8cfb61d591c468b32047ea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7E 4952 bytes
font_01_sfnt_off00006f69.bin
3ae0c64db778b78a99af906179a82f68f56ff25450edd31835efb432bb7c645e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F69 10092 bytes

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