Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aeedd9fc84a688f…

MALICIOUS

PDF

39.4 KB Created: 2020-04-01 23:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 4b7d680d8511dc1b538ca323d6882d42 SHA-1: 436562a13be7a20e09cce31a7df99fe80674c52f SHA-256: 9aeedd9fc84a688fe1e4a5e625c29c65a5d1e6223fdca98a27bd3bfad399494f
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection 'Pdf.Dropper.Agent-9048279-0' and the PDF_SEO_LINK_FARM heuristic confirm this behavior. The embedded URLs point to various domains, suggesting a link farm designed to distribute traffic or host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-9048279-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9048279-0
  • 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://workingwithvietnamese.com/uploads/1/3/0/6/130620543/130620543.html#metodologia+concepto+pdf PDF link annotation
    • http://scienceofstory.net/uploads/1/3/0/8/130874124/lefutumovorofoxutida.pdfIn PDF document text
    • http://koalitytree.care/uploads/1/3/0/3/130313167/353054.pdfIn PDF document text
    • http://cbaptistmurillo.com/uploads/1/3/0/9/130969205/8646639.pdfIn PDF document text
    • http://takethe14daychallenge.com/uploads/1/3/0/5/130588157/nekesibigomosubeke.pdfIn PDF document text
    • http://love-pv.com/uploads/1/3/0/6/130639141/gijewebigufapapu.pdfIn PDF document text
    • http://mail.synergytiling.com.au/uploads/1/3/0/6/130604532/jiferusuponeguv.pdfIn PDF document text
    • http://woodbinefarmandbrewery.com/uploads/1/3/0/7/130739333/5419886.pdfIn PDF document text
    • http://www.dcnotaryopennow.com/uploads/1/3/0/3/130379142/cfc5939ef07f6c3.pdfIn PDF document text
    • http://benobrien.ca/uploads/1/3/0/2/130291415/d0c99d77f1bb.pdfIn PDF document text
    • http://stehly2020.org/uploads/1/3/1/0/131069860/tomevuwaxisu_dugit_sepujezowiges_sumetejaxadov.pdfIn PDF document text
    • http://teacherretention.net/uploads/1/3/0/7/130739210/pukasijurorosud.pdfIn PDF document text
    • http://adamselementarygear.com/uploads/1/3/0/7/130738794/3119799.pdfIn PDF document text
    • http://coloradocanparent.com/uploads/1/3/0/3/130313263/0b0be993a9da8d8.pdfIn PDF document text
    • http://bikethesites.net/uploads/1/3/0/6/130604085/4003103.pdfIn PDF document text
    • http://innovationsbyd.com/uploads/1/3/0/7/130776205/6451482.pdfIn PDF document text
    • http://valkyriestormsaga.com/uploads/1/3/0/6/130639180/dfe0ccf0ce.pdfIn PDF document text
    • http://bluechairentertainment.com/uploads/1/3/0/5/130541733/523c6.pdfIn PDF document text
    • http://knowledgeuniversity.org/uploads/1/3/0/6/130639661/8939709.pdfIn PDF document text
    • http://webmail.lmairtech.com/uploads/1/3/0/6/130605065/tefojizuninira.pdfIn PDF document text
    • http://poptailsforyou.com/uploads/1/3/0/2/130289809/240302.pdfIn PDF document text
    • http://activemasonryandstone.com/uploads/1/3/0/4/130476074/fomavigumojuzel_fatav_bobefebopovalo_jefegitopu.pdfIn PDF document text
    • http://bourboncountrystore.net/uploads/1/3/0/8/130813923/6d0ff21623c5e3.pdfIn PDF document text
    • http://bohoboutique.org/uploads/1/3/0/4/130436207/bukiluzejivojenepi.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_off000072cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CF 7500 bytes
SHA-256: 9fed5c64dceb0be6524e370d47278e0d64b73392a762f362f3a512acc959e570

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