Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5a4bcb2a929abab…

MALICIOUS

PDF

47.0 KB Created: 2020-08-15 03:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4170a09a2abc452e9aa0197d4450a58c SHA-1: 508c9b9e7872fa81176416c00fcd695fe60d0814 SHA-256: a5a4bcb2a929ababa3c80ff05da3e74ff3f42c90467fb4790e1109c2a0f250e5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking URLs, likely intended to mask the malicious one. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=hammurabi+code+was+it+just+dbq+answers
    • http://files.davidfullerentertainment.com/uploads/1/3/0/7/130739839/2185851.pdf
    • http://files.atlantabeautyconnection.com/uploads/1/3/1/8/131860479/4986417.pdf
    • http://pazuzewoz.parentsassociationofriley.com/uploads/1/3/1/4/131437595/1269733.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/suffix_worksheets_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0444/3347/3702/files/arcades_in_nyc.pdf
    • https://cdn.shopify.com/s/files/1/0438/4705/7568/files/mixtures_and_alligation_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/29284301613.pdf
    • https://cdn.shopify.com/s/files/1/0428/5110/6972/files/84940975007.pdf
    • https://cdn.shopify.com/s/files/1/0435/0119/1328/files/small_unit_leadership_a_commonsense_approach.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4673/files/82495042639.pdf
    • https://cdn.shopify.com/s/files/1/0435/9428/5218/files/2917481969.pdf
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/52458370582.pdf
    • http://www.youtube.com/watch?v=oDALXORbtR4
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006199.bin
ed736e1443044172b0f89a0ba1e494a505467f8f5d848a58c4e69468be86601e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6199 1960 bytes
font_01_sfnt_off00006acb.bin
1068f1918b07b7b1d0e4d2956f632497a6bb4136e9f22194bc93fcdefe01b2bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACB 5328 bytes
font_02_sfnt_off00007ccf.bin
7bee02198bf16f5c18bf76abc6e1edfb014246ef27f3b7929802ee22fee70609
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 10552 bytes
font_03_sfnt_off0000a0ac.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0AC 4324 bytes