Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0e63e88aaf2643…

MALICIOUS

PDF

60.6 KB Created: 2020-08-07 04:38:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63228a84161932e8f709377728cd7cd3 SHA-1: 3bebc93e05d21e2102f783db9e50e817e49bfc69 SHA-256: da0e63e88aaf264322257358a6b07f6233bdbd3dc629ddd65e406d9c182b9560
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.com/pify?keyword=regulation+of+amino+acid+metabolism+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO poisoning tactic to obscure the malicious redirector.

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=regulation+of+amino+acid+metabolism+pdf
    • http://files.farmsteadproducts.com/uploads/1/3/1/4/131483097/rikukegigije.pdf
    • http://files.adventuresatyourdoorstep.com/uploads/1/3/1/4/131406736/jidolunebepuje.pdf
    • http://files.life-modusoperandi.com/uploads/1/3/1/8/131856032/febibidadamatatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/92765560436.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/laptop_motherboard_voltage_regulator_circuit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wimuwukewamofese.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/64711177847.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/3367055532.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/71006567366.pdf
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/69502005374.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/fujebimudok.pdf
    • https://cdn.shopify.com/s/files/1/0429/7405/2503/files/xenikavitetudewegaxuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/51327916692.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cf0.bin
19c3e35f7ea566a186a75683124344d9294c5b3c262732501a037182f01ecd97
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF0 5408 bytes
font_01_sfnt_off00009f43.bin
f19c9d1d415eda59b4bb5e387abdfa60464b5d847432ba1d3007a93fd1ee4b31
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F43 10020 bytes
font_02_sfnt_off0000c1b8.bin
3d50f22d3ae6d9a4461c814f81554cc573a3512c555c2f223aedeeaca19cd658
pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B8 16080 bytes
font_03_sfnt_off0000d670.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD670 4324 bytes