Malicious PDF — malware analysis report

Static analysis result for SHA-256 593d2147b29d817d…

MALICIOUS

PDF

77.3 KB Created: 2020-06-07 18:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 923b127d45475422f1e91a9a9bf6d45f SHA-1: a51c88c6bda6cedca6338ce947a5b14961c775ca SHA-256: 593d2147b29d817dd09ae2a0b711c9cc73bd5e94e00f838551bad57cc91b4ac2
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF documents hosted on different domains. The document body contains a reference to 'Vinotemp vt 182 manual' and embedded URLs, suggesting a lure to download a manual or related content. The primary attack pattern involves directing users to a link farm, likely for SEO poisoning or to host malicious content. No scripts were extracted, and the document body is heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://317.undesirable.us/uploads/1/3/0/2/130274154/130274154.html#vinotemp+vt+182+manual PDF link annotation
    • http://cinderellabanzon.com/uploads/1/3/0/7/130738629/b26fd0ff7e.pdfIn PDF document text
    • http://mta-sts.mx.randolphroadrunners.org/uploads/1/3/0/2/130272325/wigimetimulorim.pdfIn PDF document text
    • http://drlucyholmes.com/uploads/1/3/0/2/130288883/dab0be60e62.pdfIn PDF document text
    • http://church3danimation.com/uploads/1/3/1/4/131437776/kudamalob-kuredonase-wufid.pdfIn PDF document text
    • http://webmail.inmatelocatorservice.com/uploads/1/3/1/4/131437601/425814a087.pdfIn PDF document text
    • http://ahpsolutions.net/uploads/1/3/0/4/130475989/pivovuwesop.pdfIn PDF document text
    • http://4mq.undesirable.us/uploads/1/3/0/8/130874627/kazirivig.pdfIn PDF document text
    • http://whiteboardsandwanderlust.com/uploads/1/3/0/7/130775509/sovoteta.pdfIn PDF document text
    • http://webmail.teacherbattleplans.com/uploads/1/3/0/8/130814050/693601.pdfIn PDF document text
    • http://maldonadoconstruction.org/uploads/1/3/0/2/130272281/lefuromupemadu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jefogusiku.files.wordpress.com/2020/06/givadudedino.pdfIn PDF document text
    • https://fokolivemuxe.files.wordpress.com/2020/06/jizimibigafukasin.pdfIn PDF document text
    • https://sikuvuxopar701666652.files.wordpress.com/2020/06/94060000070.pdfIn PDF document text
    • https://bavorekivaso.files.wordpress.com/2020/06/4259045349.pdfIn PDF document text
    • https://livasif.files.wordpress.com/2020/06/wizulowesopirimolipoloji.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
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000519a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x519A 59376 bytes
SHA-256: 9f8e4b8076d78a8a1531ff01bf9cbe88f811336f4a828b8d3f6cc8e04b52bd1a
font_01_sfnt_off0001043d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043D 10504 bytes
SHA-256: b41f1f69eb271bd610a004ba87be467b8ba24cfeb355847c7ffda588d949f948

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