Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae8a4c5ce63327f…

MALICIOUS

PDF

37.2 KB Created: 2020-05-13 00:11:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f93dd7eee8b568cb33fe592623e2a170 SHA-1: 309785f9f7f2e8ea7d9c9d34adae025fbd1cedc2 SHA-256: fae8a4c5ce63327f95ae307df833b57718e746206a19fac47cd8fa6dcd427b42
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by an ML classifier. It contains a large number of external links, characteristic of a link farm, with the primary URL pointing to a page with "answers" in the title, suggesting a lure. The PDF_SEO_LINK_FARM heuristic further supports this, indicating the document's purpose is to generate SEO traffic or distribute content via numerous external links. The embedded links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://wordsmith-sg.com/uploads/1/3/1/6/131606954/131606954.html#realidades+2+capitulo+1a-+b+answers
    • http://gonewberry.com/uploads/1/3/1/4/131437891/31ea44e26.pdf
    • http://chamonixgym.com/uploads/1/3/1/4/131452952/pamimekojinulo.pdf
    • http://marketeradamsmith.com/uploads/1/3/1/4/131406591/8293342.pdf
    • http://sportscarclubofrockford.com/uploads/1/3/0/5/130588616/volexutokatese-mewoxozawopi-zabesoxizowumi-jitasafoxavefiz.pdf
    • http://livingcleanwithessentialoil.com/uploads/1/3/0/6/130605351/06ae0aa6.pdf
    • http://thecaninefamilyplanner.com/uploads/1/3/1/3/131384153/3212400.pdf
    • http://fullertonfoto.com/uploads/1/3/0/7/130739060/6522251.pdf
    • http://naturallykarmah.com/uploads/1/3/0/2/130288540/luxujunuban_kozefuwakiw_vegito.pdf
    • http://showtoweb.com/uploads/1/3/0/7/130740003/7d2a9ccefa99.pdf
    • http://dn-city.de/uploads/1/3/0/5/130551251/3709063.pdf
    • http://yourwakedefinesyou.com/uploads/1/3/0/6/130604127/zatelurutifoge_megor_xazir.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060a8.bin
2748a22cf83377a8e28d848c14c903ee60989782be3e3365a4c67e8f6b4f7fdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A8 12312 bytes

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