Malicious PDF — malware analysis report

Static analysis result for SHA-256 a012446f6712e30e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-10 19:46:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66da150624f89d456fdf1ab1aa0b1996 SHA-1: 3035c94bbe1746f5727a44166952ee9764bf01ea SHA-256: a012446f6712e30e3fd3b6694a082994a59797e2858345989c05770f9c690311
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=arms+workout+routine+pdf'. This link is presented within the document body, disguised as a workout routine PDF, to entice users to click. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The primary malicious IOC is the redirector URL.

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=arms+workout+routine+pdf
    • http://files.3dsuperjoes.com/uploads/1/3/2/8/132814400/venexeludeziz.pdf
    • http://files.wearefancymountain.com/uploads/1/3/1/0/131069887/efee18.pdf
    • http://zedogu.noshellsstageplay.com/uploads/1/3/0/8/130874431/f57922632c1f1.pdf
    • https://cdn.shopify.com/s/files/1/0432/8452/9310/files/2573306456.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/beowulf_seamus_heaney_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9024/7829/files/3252928821.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/mario_bros_background.pdf
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/bethesda_system_for_reporting_thyroid_cytopathology.pdf
    • https://cdn.shopify.com/s/files/1/0431/6571/2535/files/lowes_longview_tx.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4330/files/xisukasinogarojewatema.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/4069980709.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/xabiwake.pdf
    • https://cdn.shopify.com/s/files/1/0436/9154/0634/files/64030478345.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/computer_hardware_beep_codes.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_off00007a5e.bin
bbef3cb33fd436acb224258844ea12de3309b75bb9b470ae570dc72d2522d6d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5E 5092 bytes
font_01_sfnt_off00008baf.bin
7530a6b1c8e7e3cd45442aaca38506ede34a774f50850b5c8102907bd5d5f8f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAF 10288 bytes

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