Malicious PDF — malware analysis report

Static analysis result for SHA-256 6076bc9460ad6eba…

MALICIOUS

PDF

40.0 KB Created: 2020-03-31 06:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a6475b9f89e6438f59bbc9c2844fae8e SHA-1: f811cf166ed391ab32324fe081fc98b51a194f59 SHA-256: 6076bc9460ad6eba550bf02d9bda9ceb9af6ca8371d556dee423a2331fff5fdb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier and contains a large number of embedded external links. The primary attack pattern appears to be SEO spam or a link farm, directing users to various external websites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content or phishing sites.

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://theworkplacefixer.com/uploads/1/3/0/4/130476556/130476556.html#jonathan+butler+falling+in+love+with+jesus+mp3
    • http://staceycampfield.com/uploads/1/3/0/4/130435682/giwul_tixaberowi_xunanuboval_vejuw.pdf
    • http://onefive8.com/uploads/1/3/0/2/130270746/voxeruseses_wikawataz.pdf
    • http://marketing-for-yogis.com/uploads/1/3/0/9/130969300/4898395.pdf
    • http://anwarseedofhope.org/uploads/1/3/0/7/130738861/fd9ac.pdf
    • http://jandjoh.com/uploads/1/3/0/9/130969973/5074469.pdf
    • http://femmefatalebeauty.net/uploads/1/3/0/4/130489149/taderubilogo.pdf
    • http://namrataanavekar.com/uploads/1/3/0/5/130550882/a8f3c1d2a2cb3bc.pdf
    • http://mirrorpayroll.net/uploads/1/3/0/6/130639873/fivatodasolojim-siwurunuj-fonubejesogiw-xopubufebub.pdf
    • http://thehoopmovement.com/uploads/1/3/0/7/130739202/69d8e82.pdf
    • http://affordablehvacrepairs.com/uploads/1/3/0/2/130272377/tukitosomitomen-lefet.pdf
    • http://dermascapes.com/uploads/1/3/0/5/130550657/panugenol.pdf
    • http://movah.org/uploads/1/3/0/2/130288520/fijejasukifuweg.pdf
    • http://vitaminart.net/uploads/1/3/0/4/130478882/zedaribogi.pdf
    • http://halfpintlabs.com/uploads/1/3/0/7/130740455/dujujesiseduvuziba.pdf
    • http://exposure-photography.com/uploads/1/3/0/2/130288883/rukik-fosamo-gaxamor-rewaros.pdf
    • http://fitbrainclub.com/uploads/1/3/0/7/130739826/e5d6bffe6a5d40.pdf
    • http://amandayesnowitz.com/uploads/1/3/1/3/131398099/6420408.pdf
    • http://tgpaintersmaine.com/uploads/1/3/0/3/130323329/bixag_tejijuzowi_badituked.pdf
    • http://mirrorinyourattic.com/uploads/1/3/1/0/131070043/6579312.pdf
    • http://helenapainter.com/uploads/1/3/0/7/130775750/4597176.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_off0000705c.bin
0751d382cec7bc41c58cf8901a4828a83f393136800b503e66020784d4870dc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705C 8920 bytes

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