Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c42882330e67a3…

MALICIOUS

PDF

54.1 KB Created: 2020-08-31 14:59:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23f56aa9049d44a9b7cb2d61851249ca SHA-1: e6df046f34347736aba48f38cb8801d6a0025e9a SHA-256: 68c42882330e67a3c1786c0a348ec44ce9268f4f0e69215d98c468264b157a46
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests the document is designed to drive traffic to malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/wix?keyword=aadukalam+padam+full+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rodol.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2652/files/nalemojofamuf.pdf
    • https://cdn.shopify.com/s/files/1/0453/5540/1371/files/bubunewi.pdf
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/4370053191.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/matter_and_interactions_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3050/3846/files/module_8_aerodynamics.pdf
    • https://static.usrfiles.com/ugd/e73fea_b477eb13167244e986d7b76d8880a521.pdf
    • https://static.usrfiles.com/ugd/b8c837_d946a00d414141e79af84fb08e1ae5de.pdf
    • https://static.usrfiles.com/ugd/b8c837_e41db60785a940b79d36a42069d4c010.pdf
    • https://static.usrfiles.com/ugd/b8c837_a41ee739c4c04b99ab9cfd73163e7638.pdf
    • https://cdn.shopify.com/s/files/1/0438/4446/8901/files/nararugusozowiwuveduxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xagene.pdf
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/fasting_jentezen_franklin.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_off00008191.bin
c7430d9d5d3c41ecaae11b1264a2ad2615c104a08d73c83115e6028e868ec5e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8191 5028 bytes
font_01_sfnt_off000092ad.bin
a46e1c554a336da1e02f94e4368c88760421df9c81b80dc3991970d571221a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92AD 10292 bytes
font_02_sfnt_off0000b62c.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB62C 16164 bytes

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