Malicious PDF — malware analysis report

Static analysis result for SHA-256 454fac486cb89ee8…

MALICIOUS

PDF

32.8 KB Created: 2020-03-31 05:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c8e5ee0f10faea94a97d7a1b3a03f7f3 SHA-1: 10eea7e38b7f5964952ddece4115f8fdd5dca219 SHA-256: 454fac486cb89ee8471914b34107217139b179778ca349abd3b3876f5c1bc581
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, many of which are dynamically generated and point to unrelated domains, indicating a link farm or SEO spam tactic. The document body, though partially corrupted, contains text suggesting it is a worksheet key, which is likely a lure to direct users to these malicious or spam-related URLs. 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://thesoonernetwork.com/uploads/1/3/0/6/130605159/130605159.html#element+compound+mixture+worksheet+key
    • http://westonpestservices.com/uploads/1/3/0/5/130539841/zaxuzudipetowu-bufod-rawoj-kidofiguzudu.pdf
    • http://jamesorourkelaw.com/uploads/1/3/0/9/130969310/9a8dd447b4.pdf
    • http://hero-hydrographics.com/uploads/1/3/0/9/130969527/pitipireregane-xarumolenoriruf-furitevot.pdf
    • http://funlandrv.com/uploads/1/3/0/8/130814401/pigad.pdf
    • http://movingbackdrops.com/uploads/1/3/1/3/131380739/vedunejixafewek_potenilojoga_dedibejibi_narix.pdf
    • http://mx.ajoyhomecare.com/uploads/1/3/0/7/130776007/zasidigizididol_zutetakimamute.pdf
    • http://mrwhitchermath.com/uploads/1/3/0/9/130969514/jozulasazumita_xovoxokadonuf_folofezenedoka.pdf
    • http://rollinreaders.com/uploads/1/3/0/5/130551378/1393174.pdf
    • http://beeautifulbronzing.com/uploads/1/3/0/6/130604307/nusedinipizanu_faginoganup.pdf
    • http://sharewellandprosper.com/uploads/1/3/0/6/130621140/nedulibewazower.pdf
    • http://corethreads.org/uploads/1/3/1/3/131398093/mewukalo-pewomu-dikisobemutavus-buvotidexekoda.pdf
    • http://mycmatro.com/uploads/1/3/0/7/130739831/nimavekajeze.pdf
    • http://denvercoloradopersonalinjuryattorney.com/uploads/1/3/1/0/131070674/1db80.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_off0000596b.bin
a95e11c98483366a3f4c8c47ef6c16b773d7918956de191c41e097b4f273ea3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596B 7224 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.