Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbd95b4ad56c4a1…

MALICIOUS

PDF

38.5 KB Created: 2020-04-01 22:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 09fc6854d5c58a53d7e64322bc7151a3 SHA-1: 8587843cf2fbb98f6066983b1f8d9da701ffcbb2 SHA-256: bbbd95b4ad56c4a1a8c73dd6a9810f6cbfc8b197bd578a7cb47f42da83ea35ce
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a link farm or redirection scheme, likely intended to drive traffic to potentially malicious sites or manipulate search engine results. No scripts were extracted from this sample.

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://bionatrolcbdshop.com/uploads/1/3/0/2/130289493/130289493.html#how+to+read+marching+snare+music
    • http://vennecomidamediterranea.com/uploads/1/3/0/8/130874012/juvat_sopomepijajivul_fujen_xegevixe.pdf
    • http://vintagenowus.com/uploads/1/3/0/4/130476491/5476401.pdf
    • http://christianfamilyblog.com/uploads/1/3/0/6/130604922/e3945fb8637e30b.pdf
    • http://proudpapagear.com/uploads/1/3/0/6/130604715/ce7175f4.pdf
    • http://sherwoodduplex.com/uploads/1/3/0/7/130776229/4438666.pdf
    • http://designwallsystems.com/uploads/1/3/0/6/130621276/206321.pdf
    • http://dearestjoe.com/uploads/1/3/0/6/130604604/2157176.pdf
    • http://careercanvas.org/uploads/1/3/0/6/130621296/vegeperoxusigizon.pdf
    • http://thenightguru.com/uploads/1/3/0/7/130739274/7571980.pdf
    • http://www.breaksticks.pitbullhill.com/uploads/1/3/0/7/130776118/daron_sovilevujaduwe_wototazitebuja_tavezipiwirotuj.pdf
    • http://diamondivy.com/uploads/1/3/0/5/130589237/3160909.pdf
    • http://lindensteamacademy.com/uploads/1/3/0/5/130588573/082fbdc1c.pdf
    • http://trombonestuff.com/uploads/1/3/0/8/130874467/3955609.pdf
    • http://www.commons-middletown.com/uploads/1/3/0/2/130289277/6753641.pdf
    • http://homedetectivesinc.com/uploads/1/3/0/4/130476068/6d60c89b86.pdf
    • http://hostmaster.stoneageclimb.it/uploads/1/3/0/6/130639309/9460540.pdf
    • http://ptahinitiative.com/uploads/1/3/0/6/130605453/9946573.pdf
    • http://adyamanagement.com/uploads/1/3/0/5/130588745/gatodezuworu_valadiwetaw_gajevupuf.pdf
    • http://hova-it.com/uploads/1/3/0/3/130313049/5426358.pdf
    • http://certifiedreflexologist.com/uploads/1/3/1/4/131414134/7339891.pdf
    • http://halcyon-down.com/uploads/1/3/0/2/130271096/ab3e8df1541c69.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_off0000703e.bin
eec16608803c02d6734060625e15c7243c9e9fda044103fc9727bc5a6bfb6d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 7200 bytes

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