Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d51c72a5b2c8649…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 07:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c399c1eda09987ae1b52be9c85471583 SHA-1: ae1d3c140d321839619c834de1854fb8e07d2fc5 SHA-256: 7d51c72a5b2c8649b693b5687866816b8be31dda360a7244ff4272707a1c7609
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a tactic to drive traffic to malicious infrastructure, potentially for SEO poisoning or malware distribution. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=morfologi+diphyllobothrium+latum+pdf
    • http://najeke.fusiliersheep.ca/uploads/1/3/0/8/130813765/115982e56bd.pdf
    • http://files.lisawipperling.com/uploads/1/3/1/4/131406434/6248427.pdf
    • http://files.galleryburguieres.com/uploads/1/3/0/9/130969356/ab867102ce3cc9.pdf
    • http://files.ubwaosu.com/uploads/1/3/0/8/130814631/jefepemexi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/50032379008.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luzugojozawok.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8932/files/spongebob_campfire_song_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/55710198749.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/10461299981.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/32895036369.pdf
    • https://cdn.shopify.com/s/files/1/0429/3070/0455/files/pumoresatexore.pdf
    • https://cdn.shopify.com/s/files/1/0438/9116/3291/files/watch_doctor_strange_online.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/xumupa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/54158295126.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/nijov.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/1695719079.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/gimon.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/gufizilebeza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.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_off000068a0.bin
05e88575dc213d1b47f434d30c4dba5984ec6f86391daff2bf5feb00848495a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A0 5524 bytes
font_01_sfnt_off00007b4b.bin
46fdf14c7a02a69054995d2e449dd0f8d4e6e8e9b063cf25971dc401c06a99a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 10620 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.