Malicious PDF — malware analysis report

Static analysis result for SHA-256 b47f59c3df915815…

MALICIOUS

PDF

52.9 KB Created: 2020-03-06 16:11:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 7eeab1e43ef0fcaa28b40303b7467b92 SHA-1: 3c834bfc9e2382ee092d010710468ca71406e4eb SHA-256: b47f59c3df9158151fcf7c8cc4e67000d7425d9105739820e5deb4c1abbe739a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO manipulation tactic. The document body itself contains metadata and a title related to financial arbitrage, but the primary malicious activity appears to be the distribution of these numerous external links. No scripts were extracted, and the document body was heavily corrupted, limiting further analysis of direct payload delivery.

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://www.greenblackdress.com/uploads/1/3/0/2/130289565/130289565.html#capital+structure+arbitrage+under+a+risk-neutral+calibration PDF link annotation
    • http://www.millerassociateslawoffices.com/uploads/1/3/0/6/130621663/6547655.pdfIn PDF document text
    • http://mta-sts.mail.sarahgwyer.com/uploads/1/3/0/5/130551986/323b1fb.pdfIn PDF document text
    • http://drvnotfix.com/uploads/1/3/0/7/130776133/wuxivot-wanalazixu-melavosobiko-ranusawuk.pdfIn PDF document text
    • http://ryanmillerlandscapes.com/uploads/1/3/0/5/130550881/1349237.pdfIn PDF document text
    • http://www.southertonjewelry.com/uploads/1/3/0/3/130323091/jidulerufi.pdfIn PDF document text
    • http://little-fox-candles.com/uploads/1/3/0/4/130483584/pelijirubiz_tefoxaba_vopenav_sepuwa.pdfIn PDF document text
    • http://kmajzoub.com/uploads/1/3/0/7/130739069/8437361.pdfIn PDF document text
    • http://candfbonding.com/uploads/1/3/0/8/130813903/4222647.pdfIn PDF document text
    • http://www.herbalmedicinecanada.com/uploads/1/3/0/7/130775461/taxotisipop-ruzerozafi.pdfIn PDF document text
    • http://www.aitepeople.com/uploads/1/3/0/8/130814855/4106995.pdfIn PDF document text
    • http://danielmachine.store/uploads/1/3/0/6/130621808/tomugode-kepojevigidat.pdfIn PDF document text
    • http://www.livelargeonlittle.com/uploads/1/3/0/3/130323329/siravafe.pdfIn PDF document text
    • http://dancetodaybiz.com/uploads/1/3/0/4/130476168/c399fa144f.pdfIn PDF document text
    • http://ckclothingonline.com/uploads/1/3/0/2/130289765/bakifanuge-zarokefurij.pdfIn PDF document text
    • http://smilyface.org/uploads/1/3/0/6/130605166/kupuvuwinovugikinode.pdfIn PDF document text
    • http://www.pointcookhealth.com/uploads/1/3/0/5/130544232/4730820.pdfIn PDF document text
    • http://adentaperu.com/uploads/1/3/0/7/130776445/37012.pdfIn PDF document text
    • http://www.adriennemarellano.com/uploads/1/3/0/7/130775196/fuzumomo_gamapakegu_joratadivuxu.pdfIn PDF document text
    • http://www.millennialsgold.com/uploads/1/3/0/2/130270746/2117657.pdfIn PDF document text
    • http://www.weteachesl.org/uploads/1/3/0/6/130604948/7237255.pdfIn PDF document text
    • http://waldorfworldwide.org/uploads/1/3/0/8/130813478/gonodafide_zosefijevi_begufebofima_xewoji.pdfIn PDF document text
    • http://aquafloradesign.com/uploads/1/3/0/6/130620679/dewolozo.pdfIn PDF document text
    • http://onthemoveholistichealth.com/uploads/1/3/0/6/130621193/vudukajitibu.pdfIn PDF document text
    • http://virtualstreetcorners.com/uploads/1/3/0/5/130589337/kepuvero_mogomamiremoz.pdfIn PDF document text
    • http://www.creativesoulrevival.com/uploads/1/3/0/4/130488694/dutelivuto.pdfIn 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

Related samples 1

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_off0000a1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1FB 9112 bytes
SHA-256: 73886ab0671a3b3aae5287db202f63947cc2e4a84b17103d99553404b45dd76d

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