Malicious PDF — malware analysis report

Static analysis result for SHA-256 3395a327f305a176…

MALICIOUS

PDF

43.2 KB Created: 2020-05-20 22:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: b5e7ae183807831214a6437e548d7bb3 SHA-1: a919654a561dff477ee0c15a18f1a771fbd7d160 SHA-256: 3395a327f305a17699cb5fe79999188e9541ed3d1096bb97822e516038a3ad05
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique commonly used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body itself is largely unreadable, but the presence of numerous URLs points to a link farm or redirection strategy. No scripts were extracted from this sample.

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://hardhathomeinspection.com/uploads/1/3/0/6/130603725/130603725.html#dm+guide+5e PDF link annotation
    • http://impressivehealthcarecenter.com/uploads/1/3/0/6/130604928/desokafevofikesaf.pdfIn PDF document text
    • http://weekdayscapital.com/uploads/1/3/0/5/130590162/7792634.pdfIn PDF document text
    • http://treatyourselflikeyoumatter.com/uploads/1/3/0/6/130621702/8989715.pdfIn PDF document text
    • http://lenmacmar.com/uploads/1/3/1/3/131379255/lapug.pdfIn PDF document text
    • http://tinypaperdragon.com/uploads/1/3/1/8/131856492/1087867.pdfIn PDF document text
    • http://kdiiortreasures.com/uploads/1/3/0/6/130620464/lifuluzebupuw_vekuwenixa.pdfIn PDF document text
    • http://internationalfutsalchallenge.com/uploads/1/3/0/7/130739023/459fe19f.pdfIn PDF document text
    • http://alliancescience.net/uploads/1/3/0/5/130588850/gawerazajex_muzugugef.pdfIn PDF document text
    • http://goodasgoldjewelery.com/uploads/1/3/0/2/130274263/2947232.pdfIn PDF document text
    • http://redengineparty.com/uploads/1/3/0/8/130814754/zorixozox-miradaxup.pdfIn PDF document text
    • http://heritageconcepting.nl/uploads/1/3/0/7/130739524/diwodubisugeki-kereleni.pdfIn PDF document text
    • http://virginislandseverything.com/uploads/1/3/0/6/130604459/3662859.pdfIn PDF document text
    • http://sabadellbuilding-wpb.com/uploads/1/3/0/6/130604505/duveliniguloju.pdfIn PDF document text
    • http://talkeetnadallhouse.com/uploads/1/3/0/2/130270826/waranivituretabu.pdfIn PDF document text
    • http://sandersclosingsllc.com/uploads/1/3/0/7/130740187/07967.pdfIn PDF document text
    • http://simonouellette.com/uploads/1/3/1/3/131382447/xaxeri.pdfIn PDF document text
    • http://geminimines.com/uploads/1/3/1/8/131856567/6ae9c2f0ff4baa2.pdfIn PDF document text
    • http://immlawcounsel.com/uploads/1/3/0/8/130874050/mabewi.pdfIn PDF document text
    • http://mrsquam.com/uploads/1/3/0/4/130476736/relaji-xigotov.pdfIn PDF document text
    • http://refsrus.net/uploads/1/3/0/2/130287862/5423815.pdfIn PDF document text
    • http://clanbrown.ca/uploads/1/3/0/7/130776639/noximod-jozawaf.pdfIn PDF document text
    • http://link3technologies.net/uploads/1/3/0/2/130289429/c9a08f212022f.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 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_off00007d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D26 10540 bytes
SHA-256: 192e8a7b009ce33982e39d854db4358ea043d106b89d8f577a45eb5a68457abe

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