Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefd0d79f3a285de…

MALICIOUS

PDF

42.0 KB Created: 2020-03-31 05:04:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 65b1d72472e31294f67681b3a5b59976 SHA-1: 797bfffb3e8754f7be61d46e4ea2f9a975b6fd2b SHA-256: fefd0d79f3a285ded9acc8a9b605116ab01b54e16cede3eba7e2d05b6b084103
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, characteristic of a link farm or SEO spam operation. The document body, though partially corrupted, contains text related to identifying special educational needs, serving as a lure to these external sites. The primary intent appears to be driving traffic to a network of potentially malicious or low-quality websites.

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://feel-well.org/uploads/1/3/0/5/130541445/130541445.html#como+identificar+necesidades+educativas+especiales PDF link annotation
    • http://marketsocket.com/uploads/1/3/0/8/130814258/zetuja.pdfIn PDF document text
    • http://anxiouslittlepishy.com/uploads/1/3/0/4/130436410/nebobujuvub_vusetutot.pdfIn PDF document text
    • http://lucymarencarpenter.com/uploads/1/3/0/6/130620605/tafon.pdfIn PDF document text
    • http://angelina-kartsaki.com/uploads/1/3/0/7/130776601/86ee707cf332fbf.pdfIn PDF document text
    • http://mosnaturalhaircare.com/uploads/1/3/0/5/130541327/8aa0f.pdfIn PDF document text
    • http://keenanforever.org/uploads/1/3/0/6/130621026/2137870.pdfIn PDF document text
    • http://letsbreakbarriers.com/uploads/1/3/0/6/130621570/8ce8290117b.pdfIn PDF document text
    • http://monasflowercafe.com/uploads/1/3/0/6/130604858/5725843.pdfIn PDF document text
    • http://cssltd.wales/uploads/1/3/0/4/130435583/2878b64ff.pdfIn PDF document text
    • http://crosbyirontonmusic.org/uploads/1/3/0/3/130379841/7277244.pdfIn PDF document text
    • http://magalieshines.com/uploads/1/3/0/6/130622104/kuwunazek.pdfIn PDF document text
    • http://bonnmeals.ca/uploads/1/3/0/7/130740054/livanapanekidosif.pdfIn PDF document text
    • http://ymagofficial.com/uploads/1/3/0/9/130969194/nigapakevasameloked.pdfIn PDF document text
    • http://oneagleswingsvic.com/uploads/1/3/0/6/130621281/b7e3c7.pdfIn PDF document text
    • http://vsserviciosinteventos.com/uploads/1/3/1/4/131438438/tofid.pdfIn PDF document text
    • http://jerrysrenovationsllc.com/uploads/1/3/0/6/130603900/zerunosoruli-zinoz-sekapilawof-fenixeriniwezor.pdfIn PDF document text
    • http://ebrugezgindesign.com/uploads/1/3/0/4/130476078/xapumigivi.pdfIn PDF document text
    • http://beautyintheblack.com/uploads/1/3/0/8/130813757/gunoteju_vozose_bugifetu.pdfIn PDF document text
    • http://trefundraising.com/uploads/1/3/0/2/130271047/8621048.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7871 8880 bytes
SHA-256: 64d96d80bbd448edb9b03859ef7d663e0675c9a110ab8674c7a54231d0e76458

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