Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70d304dae5e5b09…

MALICIOUS

PDF

38.7 KB Created: 2020-03-31 03:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 545d19ac9d3173f9a439b7a88133b4ef SHA-1: 8578b20a546a00dd674219cd7dfa0cc890caa4b0 SHA-256: d70d304dae5e5b09f5b9125c9389832faea4b0a0ebb88018d02d8be376ffd929
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO link farming or to distribute malicious content. The document body contains a seemingly innocuous string related to a washer error code, which may be a lure. No scripts were extracted from this sample. The primary attack vector appears to be directing users to a network of suspicious URLs.

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://paigeprettyman.com/uploads/1/3/0/7/130775884/130775884.html#amana+front+load+washer+error+code+d5 PDF link annotation
    • http://jessiescanlonyoga.com/uploads/1/3/0/5/130544385/038d15534.pdfIn PDF document text
    • http://xn--rossoire-d1ae.com/uploads/1/3/0/2/130289341/xitikelutiwez.pdfIn PDF document text
    • http://peterpocaigue.com/uploads/1/3/0/2/130288426/labamuxog.pdfIn PDF document text
    • http://konrn.com/uploads/1/3/1/4/131437670/zokanoka-zogizagekusi.pdfIn PDF document text
    • http://realityexperiments.com/uploads/1/3/1/3/131383943/5142210.pdfIn PDF document text
    • http://yosoypimex.com/uploads/1/3/0/3/130324092/37194a82dc8fb6a.pdfIn PDF document text
    • http://geppettoproject.com/uploads/1/3/0/4/130483940/f95a2e3ef1626.pdfIn PDF document text
    • http://wmscoralkeepers.com/uploads/1/3/0/5/130542907/db20e54f.pdfIn PDF document text
    • http://gaslogsbbqgrills.com/uploads/1/3/0/5/130543156/rekosukisapak-kinif.pdfIn PDF document text
    • http://masonhr.com/uploads/1/3/0/6/130605357/1654234.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 2

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_off00006d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1B 8508 bytes
SHA-256: d57658ead9a3e25e740dac0a27e07eec0655b50ffd8a0f63e6bc95683dd9e711

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