Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a90e065ab1ea69…

MALICIOUS

PDF

51.9 KB Created: 2020-08-05 15:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a57135b88590edaa994ded1ca271e01 SHA-1: 6768c4c38255b759871e68cd23b6968012d2e1a2 SHA-256: 80a90e065ab1ea69338b3b7259141c0364c1c1728f20c0caecd7e84d99bf04e9
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 external PDF files, suggesting a link farm or redirection scheme. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=101+bus+timetable+balbriggan+to+dublin+pdf
    • http://files.sinyonshuntay.com/uploads/1/3/1/6/131637037/fogawupikixa.pdf
    • http://files.camptownmarketing.com/uploads/1/3/0/9/130969322/jogisekopepogupova.pdf
    • http://files.macjannet.org/uploads/1/3/0/8/130874457/xifipubovigop-xesakinesaxu.pdf
    • http://files.compositiona.com/uploads/1/3/0/8/130813997/7966125.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/66170083747.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97503793953.pdf
    • https://cdn.shopify.com/s/files/1/0428/4334/0956/files/71958292269.pdf
    • https://cdn.shopify.com/s/files/1/0440/8606/7352/files/36644593920.pdf
    • https://cdn.shopify.com/s/files/1/0437/2037/6474/files/dafupakenarapozozusefada.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/bodixiwij.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/pededenixokipominufikufag.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2518/files/59931676063.pdf
    • https://cdn.shopify.com/s/files/1/0433/4354/4488/files/68423178021.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/vocabulary_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/82166352429.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005faf.bin
71c4fe3b95211b72c3a32414fdbcc47212f22858c6fa2f114007233b859d4e67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 5484 bytes
font_01_sfnt_off00007228.bin
d3873b250333d69de4c88555c18bf3147e29c770a857d1ef746a6cb94892094b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7228 10104 bytes
font_02_sfnt_off000094ef.bin
d1f015a84b6729bda498b7383d47f462b397ad4f5f9a76ab3b285b19d547a41f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94EF 16308 bytes
font_03_sfnt_off0000aa6b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA6B 4324 bytes
font_04_sfnt_off0000b81e.bin
74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB81E 1736 bytes

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