Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2cf1ac35722b30…

MALICIOUS

PDF

39.9 KB Created: 2020-03-13 03:13:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6b6286e4455859eecc46d420adbe142e SHA-1: 3ec507d15010195641ba679241dfb5b4ff5e60cb SHA-256: 6d2cf1ac35722b3036bf817c3d0cdcfa8051de7c072824435f98ec861bcac89e
96 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary link points to 'http://financementgeneral.com/uploads/1/3/0/5/130540049/130540049.html#common+proper+and+collective+nouns+examples', which appears to be a lure. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the sheer volume of links suggests a coordinated effort to redirect users to potentially harmful content.

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://financementgeneral.com/uploads/1/3/0/5/130540049/130540049.html#common+proper+and+collective+nouns+examples
    • http://www.jjs-consulting.org/uploads/1/3/0/2/130273801/vezukurezaguwek.pdf
    • http://openwalnutcreek.org/uploads/1/3/0/6/130621217/de4f99e4375147b.pdf
    • http://watestingllc.shop/uploads/1/3/0/5/130588864/383c91227fa02.pdf
    • http://d6.fumcsantarosa.org/uploads/1/3/0/6/130604113/timuw.pdf
    • http://4picsell.com/uploads/1/3/0/6/130640091/jadadebi.pdf
    • http://rcspecializedagencies.org/uploads/1/3/0/8/130814421/xisedowejaropasewi.pdf
    • http://mail.enrichmedia.my/uploads/1/3/0/5/130543368/pofanow.pdf
    • http://cpanel.bangalowclinicalpsychology.com.au/uploads/1/3/0/5/130540296/c94f0faad946e99.pdf
    • http://www.khsnow.com/uploads/1/3/0/6/130603928/kujupuwidafapa-lojuromexupojob.pdf
    • http://likemash.com/uploads/1/3/0/6/130620572/zefofetamujob-donelulinos-xefagimidoma-buniz.pdf
    • http://rayraybeats.com/uploads/1/3/0/4/130476493/3099995.pdf
    • http://www.dirtygurloffroad.com/uploads/1/3/0/6/130620650/mabipibe.pdf
    • http://men4jesusalvintx.org/uploads/1/3/0/2/130289252/xiketiv.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_off00007232.bin
e9973763b781b1d9addff03eb849c3edcbd7c4e40519d04fe0ae5a4b0f4e180b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7232 8448 bytes

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