Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efd6e976e505886…

MALICIOUS

PDF

41.6 KB Created: 2020-08-03 07:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e0da2041d021bb3425bf49d39649fe2 SHA-1: 554bc83e9460efed386dd5e76aa58889482eead2 SHA-256: 6efd6e976e5058865b1f3c82de5a6fcd5beabd94be42b13867c800d4ba602d62
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or redirection attack designed to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=armitron+sport+watch+manual
    • http://files.novention.com/uploads/1/3/1/8/131859993/tavusobivi_zuguro_megoropobun_pobujosono.pdf
    • http://files.artfulconnextions.com/uploads/1/3/0/8/130815381/c226f336ee0ba31.pdf
    • http://files.livegentlewellness.com/uploads/1/3/2/7/132740723/nuzidifi.pdf
    • http://files.amanapopcornandicecream.com/uploads/1/3/0/9/130969390/3686079.pdf
    • http://files.mthermonministries.org/uploads/1/3/1/1/131164424/favokuxemubumo_zosazuturojeli_vawafu_fikatomikaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/fupuxike.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/jopovojezubisedosuvo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/68534002813.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/fanubere.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/61581307242.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/tajirumolaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7269/files/4557269880.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/sulizivapugoxonepuvaped.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/zogatinofuditoxiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6145/files/75705227767.pdf
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/silajisesotajuvokanowag.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9101/files/jabaxakadilukeso.pdf
    • https://cdn.shopify.com/s/files/1/0436/1804/2018/files/62169291980.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000637b.bin
f981df3124622fbe7791860849445a925cef65d6f7e515e85950f91866d6602e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637B 5252 bytes
font_01_sfnt_off0000753f.bin
98b88f454e587fb885f0b18febcbcca7e835348894b4edfcefc3d5f26657ac73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x753F 10608 bytes

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