Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b8af76b0560b5b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-12 08:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa1d0aa02f0ccc2bc4a03f460de9d594 SHA-1: 32b62bec126c895d1cd21d1a6a4c5c442f5b4219 SHA-256: a9b8af76b0560b5bf68a7414917418f8f6bacef52f17b1cce30e6373cdfd112f
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector. The primary malicious link, 'https://ttraff.com/pify?keyword=broiler+production+manual+pdf', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting a lure to download further content. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination.

Heuristics 4

  • 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
  • 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=broiler+production+manual+pdf
    • http://files.omgirl2013.net/uploads/1/3/2/6/132681504/4355807aeac.pdf
    • http://files.ncappartnership.org/uploads/1/3/0/7/130775151/3966640.pdf
    • http://wutajiz.good-neighbors.org/uploads/1/3/1/4/131453133/7546928.pdf
    • http://files.lumisworks.com/uploads/1/3/0/7/130775265/ropokoresibefijo.pdf
    • http://files.innerjourneycanada.com/uploads/1/3/0/8/130813524/6eb5a836e19.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/evermotion_archinteriors_vol_39.pdf
    • https://cdn.shopify.com/s/files/1/0432/0509/9675/files/83020506933.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/woxigus.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/9608916104.pdf
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/gavabalologokasipatusel.pdf
    • https://cdn.shopify.com/s/files/1/0437/5900/9943/files/10378393980.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/vurufikevolinomukajosida.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/singer_merritt_2404.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/emergency_endodontic_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/how_to_use_digital_multimeter_dt9205a.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_off00006193.bin
2cce1dc8a45f87fa117e1cf3c90afd2dca5e701101bc99c8b4faca576a118910
pdf-font-stream PDF embedded font (sfnt) at offset 0x6193 5172 bytes
font_01_sfnt_off0000730e.bin
dbe67795d9f52345e35a3ef8fb776ac2db5abd1d19f485e0f157f10cb15902cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x730E 10376 bytes