Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df0479820c58bce…

MALICIOUS

PDF

117.1 KB Created: 2020-08-12 14:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 372f1c822a8955e13f85aa668e4d7119 SHA-1: e6a3dca54be36e3bcaf89121e02393584ed72e30 SHA-256: 6df0479820c58bce465ac436d7ad8743f97c1844b46b2ec85f28f9a9a24350b5
154 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the target URL, indicating an attempt to trick users into clicking it. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.cc/pify?keyword=rig+veda+mantras+in+english+pdf
    • http://files.cmitchell.shop/uploads/1/3/0/7/130740173/monategerirug-rejodu-mubegodepapa-bovobom.pdf
    • http://puvilabi.sarahouanond.com/uploads/1/3/0/9/130969483/jepefitozukirij_fanewu_kuserijebik.pdf
    • http://files.andiburnum.com/uploads/1/3/1/4/131437306/2ade2a.pdf
    • http://files.inthezonebar.com/uploads/1/3/2/3/132302759/gubanewari_gupuxejosa_guduwo_vudiz.pdf
    • http://files.coachscottschemistry.com/uploads/1/3/0/7/130775115/a13137.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/bissell_proheat_2x_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/dawuzigagigok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokadexowigexavutezirero.pdf
    • https://cdn.shopify.com/s/files/1/0436/2321/9363/files/vibolenakukubavekepadux.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/garesuriranito.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23651487672.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/afghanistan_a_cultural_and_political_history_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5577/files/podekowidex.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0818/files/95110382970.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/durga_saptashati_sanskrit.pdf
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/wobigifuxalisafaxalapim.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/74688867163.pdf
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/66293900304.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64238793182.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001731d.bin
14627601081dbd871fc7957bc0cc9a27653f90e5983ff3842dd51511e0dde747		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1731D 5200 bytes
font_01_sfnt_off000184a3.bin
ea094b311b51b462bbe8ec7cbcabd265be336a9ce3599257250d184f4baa3ab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x184A3 11680 bytes
font_02_sfnt_off0001a9c9.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9C9 4324 bytes
font_03_sfnt_off0001b7ca.bin
078e46546e3abcbf7a33bff2615794ead01f6ce25b4d8aaa2b4f707bd1f77086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7CA 3564 bytes

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