Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca4d108e1055b50…

MALICIOUS

PDF

40.7 KB Created: 2020-03-22 05:54:24 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d272d066716a173fd1d5ba9fc5b54e65 SHA-1: 676d033694a330a1d8a539bae2ec3380989035ca SHA-256: 0ca4d108e1055b50ea563de7baaea1f7aec35ef07a55f2baac7bd2d94265b1c4
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm or SEO spam, embedding a large number of external URLs. The ML classifier strongly indicates maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external links, suggesting a potential attempt to redirect users to malicious sites or for SEO manipulation. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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://elizabethlopez.net/uploads/1/3/0/4/130435619/130435619.html#level+green+baptist+church+keavy+ky
    • http://brisbanenutrition.com/uploads/1/3/0/4/130483616/fujivabuzigabazowo.pdf
    • http://hostmaster.holysmokesrecords.co.uk/uploads/1/3/0/6/130621280/wifuwaboxa.pdf
    • http://puppylovepetcarema.com/uploads/1/3/0/6/130639815/4543e.pdf
    • http://www.in2itphotography.com/uploads/1/3/0/7/130775643/vazojekerametogeji.pdf
    • http://www.tpf-c.com/uploads/1/3/0/5/130538941/135a4608e.pdf
    • http://eastwestflexfoods.com/uploads/1/3/0/9/130969358/rakimaru.pdf
    • http://raapremiereproperties.com/uploads/1/3/0/6/130639220/7339335.pdf
    • http://mchenry-schutz.com/uploads/1/3/0/2/130288378/ca22de816a.pdf
    • http://sundayimpression.com/uploads/1/3/0/9/130969278/9704123.pdf
    • http://lawsonlaski.net/uploads/1/3/0/7/130775840/bd166f1ce93.pdf
    • http://townofgettysburg.com/uploads/1/3/0/7/130775647/mibujilolekit.pdf
    • http://jeweltreejournal.com/uploads/1/3/0/3/130323469/dewimukututiku.pdf
    • http://www.takingpersonalresponsibility.com/uploads/1/3/0/2/130288551/puvanavu_dekoxigupobifov_dugizuwoditiraj.pdf
    • http://www.homespunmidwifery.com/uploads/1/3/0/3/130323403/sebowedatunamon_zafegigiworukax_subogizite.pdf
    • http://manualdeingles.com/uploads/1/3/0/6/130621909/9eebe042ac92e7.pdf
    • http://www.byronbaybrushcutting.com/uploads/1/3/0/6/130621053/ff95abd.pdf
    • http://dream-job.site/uploads/1/3/0/6/130621516/3744108.pdf
    • http://altedsolutions.net/uploads/1/3/0/7/130775808/88c901e424df.pdf
    • http://psychedelicsmadnessawakening.com/uploads/1/3/0/7/130739930/254f5bcfc3.pdf
    • http://rentrollio.com/uploads/1/3/0/2/130289448/7671438.pdf
    • http://deidredanielle.shop/uploads/1/3/0/5/130539440/48ce5c54c10c54.pdf
    • http://ejunkie.us/uploads/1/3/0/2/130270804/104f00.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_off000075b0.bin
36f4a4865cbd2d4262a83babea558ccc194f87c3f6dd5215ccbbe8c1470cc209		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B0 8180 bytes

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