Malicious PDF — malware analysis report

Static analysis result for SHA-256 069978f4475d637c…

MALICIOUS

PDF

45.8 KB Created: 2020-03-20 04:22:10 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3289ee05f331cfa89c22cb912f79b5db SHA-1: 0c55956ebb143777f251c665516cd8a996f1a4c0 SHA-256: 069978f4475d637cbe672b5c74c3407f541c6c33f79936b1667dc60f113d32c2
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body contains a link that appears to be a lure for downloading software, specifically 'nero startsmart for windows 7'. The presence of a large number of external PDF links, as flagged by the PDF_SEO_LINK_FARM heuristic, suggests a tactic to distribute malicious content or engage in SEO manipulation. The primary IOC is the embedded URL which likely leads to a malicious payload or further redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8024191-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8024191-0
  • 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://navice.org/uploads/1/3/0/5/130588846/130588846.html#download+nero+startsmart+for+windows+7
    • http://cbrecanadabuildersclub.com/uploads/1/3/0/7/130738978/2678567.pdf
    • http://www.silverandgoldboxbreaks.com/uploads/1/3/0/5/130588328/lorepatemugereja.pdf
    • http://www.dyeus.com/uploads/1/3/0/4/130493143/xitezuvusemon_nerixuxaxoworis_tamivozamu_pejove.pdf
    • http://www.onemanbandinc.org/uploads/1/3/0/8/130874575/12c7798ffd902b2.pdf
    • http://pycdrafting.com/uploads/1/3/0/5/130589427/8c11c08ae.pdf
    • http://www.thefrothcompany.com/uploads/1/3/0/4/130493714/8513447.pdf
    • http://siouxcitypropainting.com/uploads/1/3/0/4/130489958/saxuderojuna.pdf
    • http://reclaiminghopecounseling.com/uploads/1/3/0/6/130620709/36543.pdf
    • http://nancyrichy.com/uploads/1/3/0/6/130620557/xefur-lorotimenumo.pdf
    • http://sherifschefssauces.com/uploads/1/3/0/2/130289580/gotajewabi.pdf
    • http://jpwsme.com/uploads/1/3/0/7/130776229/vezibovolago.pdf
    • http://www.wheresalstrailer.alfredschipsandsalsaexpress.com/uploads/1/3/0/2/130291453/1191013.pdf
    • http://christlife.blog/uploads/1/3/0/6/130604955/2362546.pdf
    • http://bluetideconsulting.net/uploads/1/3/0/8/130874468/7897592.pdf
    • http://gatepariksha.com/uploads/1/3/0/4/130483550/nesugudubewixifubab.pdf
    • http://cosmoparticle.net/uploads/1/3/0/8/130813714/rakoj.pdf
    • http://nursinghomepj.com/uploads/1/3/0/6/130620417/teleretel-zuxodota.pdf
    • http://reallygreatcrap.com/uploads/1/3/0/6/130620470/vezumixexegig-tawamido.pdf
    • http://joshuasandefur.net/uploads/1/3/0/7/130740010/reriwedaf-gufunuwe-sobuzon-tixunumizaf.pdf
    • http://neflopioidepidemic.com/uploads/1/3/0/5/130589214/bavalipuxi_mebisufubi_repemomo.pdf
    • http://www.seagroveinteriors.com/uploads/1/3/0/5/130546076/8993382.pdf
    • http://247trailerparts.com/uploads/1/3/0/5/130540209/13d841.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_off00008768.bin
40956460b0ccbd52a692d7c15f0ef5eadcfc712faa7bcef13e4970ac5affd19e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8768 8844 bytes

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