Malicious PDF — malware analysis report

Static analysis result for SHA-256 768743bfdc31eded…

MALICIOUS

PDF

56.0 KB Created: 2020-07-30 14:19:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 191c263a1ddf3626a2fddd63f08ac35d SHA-1: 0e457148c269ccea24917406abed19a47c5776e7 SHA-256: 768743bfdc31eded4ad22b56f1512258eae525a7cb06984806884c0edba7c94a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to external websites, including a known malicious redirector at 'ttraff.com'. The document body, though obfuscated, suggests a lure related to 'Ghazwa e khandaq'. The presence of numerous PDF links, many pointing to Shopify domains, indicates a link farm designed to obscure the ultimate destination and potentially host further malicious content.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.com/pify?keyword=ghazwa+e+khandaq+pdf
    • http://files.catharsisfightingthedrugepidemic.com/uploads/1/3/0/8/130874265/52f11009382e5ed.pdf
    • http://files.gentlegiantdesign.org/uploads/1/3/1/3/131378990/9666079.pdf
    • http://files.bcinteriorjazzfestival.com/uploads/1/3/1/3/131398533/gogevuminamarav.pdf
    • http://files.hillsdalecountychamber.com/uploads/1/3/1/1/131164250/nisafenumade.pdf
    • http://files.siucmst.org/uploads/1/3/1/0/131070602/werixudafimene-kezizazizo-zojonowirex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/10953498244.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9528/files/88994388714.pdf
    • https://cdn.shopify.com/s/files/1/0437/5589/6990/files/fetogikikexibaxun.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/wexatujinam.pdf
    • https://cdn.shopify.com/s/files/1/0435/2930/6263/files/43670734199.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/verazebuwipesogizel.pdf
    • https://cdn.shopify.com/s/files/1/0440/1774/6070/files/jatupavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1757/6354/files/48657296192.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/81904952645.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008340.bin
fa9732cfedc3c33aa3bebe59bad8d34c8ee5c9201f6a66c1ca29c881cdee4c46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8340 4736 bytes
font_01_sfnt_off00009364.bin
1d11335eb0ab543930886eea0075fc08ef137b283999fb43661d0a5eecbcfd13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9364 10104 bytes
font_02_sfnt_off0000b62c.bin
851ebd11c2ffe72e1226d6e729c7c9dd6c855269fceba3184cc8e9a254661b18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB62C 17788 bytes

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