Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d76f23acd665417…

MALICIOUS

PDF

37.7 KB Created: 2020-03-29 05:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fdeea92a42a58e96f7567f545eb020a6 SHA-1: a18d4740e7354b0f639c4d325896e6f1850ef1e9 SHA-256: 6d76f23acd6654171a041f160e79a21888acdf293a082a2f417e0809236f87c8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO poisoning attack. The ML classifier also strongly indicated maliciousness. The embedded URLs likely lead to further malicious content or phishing pages, and the document body itself contains obfuscated text and URLs related to vehicle maintenance, possibly as a lure.

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://pameladirnberger.com/uploads/1/3/0/3/130323174/130323174.html#2015+ford+6.7+l+egr+delete+instructions
    • http://myconnectutility.com/uploads/1/3/0/7/130775680/f7bf57731c67f.pdf
    • http://www.jenna-frye.com/uploads/1/3/0/5/130546294/5506086.pdf
    • http://ellessdesignstudio.com/uploads/1/3/0/5/130543262/c96d9f296f.pdf
    • http://store.collaborative.net/uploads/1/3/0/4/130491166/427ab04c6e.pdf
    • http://plataformaciudadana.net/uploads/1/3/0/7/130775258/1163028.pdf
    • http://paintingcontractorct.com/uploads/1/3/0/2/130287945/mijugisewojadife.pdf
    • http://househunterscoloradosprings.com/uploads/1/3/0/2/130292098/4f0c555eaf51.pdf
    • http://camperhand.com/uploads/1/3/0/7/130738759/df14ad1f0.pdf
    • http://fjallbackshus.com/uploads/1/3/0/6/130605341/bivokudimofawusoxaf.pdf
    • http://dropsofhope.net/uploads/1/3/0/9/130969149/7168682.pdf
    • http://randiandmike.com/uploads/1/3/0/7/130776632/c091f224dc4.pdf
    • http://mechapocalypse.net/uploads/1/3/0/6/130621132/tuzizulovatarawem.pdf
    • http://cajunyoga.com/uploads/1/3/0/2/130292110/4209272.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_off0000691d.bin
4442129dadd1cc3d29e5301476fd3df05f24e42a2a6d43410b321de6978e2375		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691D 7988 bytes

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