Malicious PDF — malware analysis report

Static analysis result for SHA-256 9317dd8544aed2ef…

MALICIOUS

PDF

46.1 KB Created: 2020-05-17 21:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: b95ae03685f52ecec1800dd26592dba5 SHA-1: fe249eb668ded970bb6f14c7515e03663f83e85c SHA-256: 9317dd8544aed2ef5cf0a743264589491cb01544b27054b307da0959e4f53801
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file exhibits characteristics of a link farm, containing a large number of external URIs pointing to various domains. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this pattern, suggesting the document's primary purpose is to distribute these links. The ML classifier also strongly indicates maliciousness. No scripts were extracted from this sample, but the extensive link distribution points towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://juicyscoopobsessed.com/uploads/1/3/1/4/131483447/131483447.html#antonin+artaud+pdf+francais PDF link annotation
    • http://ravenwheel.com/uploads/1/3/0/5/130551839/pewes.pdfIn PDF document text
    • http://finderslodge.com/uploads/1/3/0/7/130776823/xaretizaramo.pdfIn PDF document text
    • http://rekwiredcosmeticsllc.com/uploads/1/3/0/6/130604285/29515341c.pdfIn PDF document text
    • http://agetea.de/uploads/1/3/0/6/130639535/metumad_tujulimub_buxiwom.pdfIn PDF document text
    • http://refundseller.com/uploads/1/3/0/7/130775986/2547667.pdfIn PDF document text
    • http://azbankownedhomes.com/uploads/1/3/0/4/130436028/felotipirosojoj.pdfIn PDF document text
    • http://mutinytv.com/uploads/1/3/0/7/130739876/9701708.pdfIn PDF document text
    • http://shannonkmcdermott.com/uploads/1/3/0/7/130775471/6ca8750.pdfIn PDF document text
    • http://lacordobesallc.com/uploads/1/3/1/8/131871849/e7f4eee156.pdfIn PDF document text
    • http://clownthreat.com/uploads/1/3/0/4/130435892/godupinixufi-melenitomav.pdfIn PDF document text
    • http://progradeelectric.com/uploads/1/3/0/6/130620584/jafeforuvixav-zesoromileg-jaleguri.pdfIn PDF document text
    • http://enricoharmon.com/uploads/1/3/0/6/130620823/mafugalojosete-rurutuzevag.pdfIn PDF document text
    • http://cmajor7music.com/uploads/1/3/1/4/131407958/6946637.pdfIn PDF document text
    • http://testingoutasitebuilder.net/uploads/1/3/0/3/130313237/12b82647.pdfIn PDF document text
    • http://riversidepropertymaintenance.com/uploads/1/3/0/5/130589322/lefofa.pdfIn PDF document text
    • http://emiliataylor.com/uploads/1/3/0/8/130814714/0544a2241da15b.pdfIn PDF document text
    • http://mybiginterview.com/uploads/1/3/1/4/131408086/wumipawaku_lurifex.pdfIn PDF document text
    • http://ipnetworkflorida.net/uploads/1/3/1/4/131454052/2660320.pdfIn PDF document text
    • http://cascriva.com/uploads/1/3/1/6/131607635/3099426.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

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_off00008295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 13724 bytes
SHA-256: 63a71ec1e90b3ad56801e7bbf6a3c2a55878e0162a5a23c41a1e96c293f3008e

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