Malicious PDF — malware analysis report

Static analysis result for SHA-256 134966db4a1cafdc…

MALICIOUS

PDF

45.8 KB Created: 2020-08-20 21:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74f7e4708c3c6a6f353a0c812bfe5bb1 SHA-1: f2df17feac8eb073d85c2418966b85f860f81636 SHA-256: 134966db4a1cafdcc20f93b65707b2251fc228b14833c6ddb318c7cda5458bfb
154 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.com, disguised as a 'phd student cv template'. This redirector likely leads to further malicious content or exploits. The document also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, many of which are hosted on potentially untrusted domains. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly suggest an intent to redirect the user to harmful content.

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=phd+student+cv+template
    • http://files.pawcrazy.org/uploads/1/3/1/3/131380440/4058577.pdf
    • http://files.francesca-williams.co.uk/uploads/1/3/0/7/130740521/wesuxavux.pdf
    • http://files.northchannelnetwork.org/uploads/1/3/0/7/130775828/fawojajikuzonid.pdf
    • http://joxiv.trinitylutheransd.org/uploads/1/3/0/7/130738870/tenawowerogim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/2499292058.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/sheikh_abdul_qadir_jilani_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/android_4_movie_720p.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/22518904565.pdf
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/21899551917.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/kubonuwagurosagirik.pdf
    • https://cdn.shopify.com/s/files/1/0433/9358/1212/files/breeders_cup_past_performances_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006827.bin
b7466954c4e516a41f811ef393ba56924a784b814ab2feaca562fad8fb75634f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6827 5004 bytes
font_01_sfnt_off000078fa.bin
cdfbbbd2b19bfd45895ddd4b82cf1f82595a1072ec5cbeee7b09a3473771c37c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FA 10536 bytes
font_02_sfnt_off00009cea.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEA 4324 bytes

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