Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd7a29b925502d4…

MALICIOUS

PDF

35.7 KB Created: 2020-03-28 11:59:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: b4033c7cd985cc43e72914cf392423a4 SHA-1: 4587a9cb63d9d6beeff6b19f115682a42c52341a SHA-256: 1dd7a29b925502d44f707823612b05a33aec5b95f4686e14f2167754595499a8
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links to other PDF files hosted on various domains, suggesting a link farm or a distribution mechanism for further malicious content. The document body contains garbled text and some of the extracted URLs, indicating a potential SEO manipulation or content-luring tactic.

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://greydroid.com/uploads/1/3/0/3/130323100/130323100.html#sinonimos+para+de+igual+manera PDF link annotation
    • http://afcmottingham.com/uploads/1/3/0/4/130493714/9015651.pdfIn PDF document text
    • http://balmingileadskincare.com/uploads/1/3/0/6/130604083/gapeviko-tepaniw.pdfIn PDF document text
    • http://mta-sts.mx.nwrpdp.com/uploads/1/3/0/7/130775451/viwubiko.pdfIn PDF document text
    • http://empowerpilatesbarre.com/uploads/1/3/0/5/130551920/5889782.pdfIn PDF document text
    • http://clevershowers.com/uploads/1/3/0/8/130874529/98e8b862d4.pdfIn PDF document text
    • http://dahvik.com/uploads/1/3/0/2/130288565/tekun.pdfIn PDF document text
    • http://flatlandultrarunner.net/uploads/1/3/0/6/130639721/nowena_gaxidapumopev.pdfIn PDF document text
    • http://kaufmanlawoffice.net/uploads/1/3/0/4/130483494/7e41f.pdfIn PDF document text
    • http://melbournecounseling.net/uploads/1/3/0/5/130543685/5302083.pdfIn PDF document text
    • http://artbookblog.org/uploads/1/3/0/5/130543848/2011b41a9.pdfIn PDF document text
    • http://thegrilllab.com/uploads/1/3/0/5/130544889/7517527.pdfIn PDF document text
    • http://petahuk.store/uploads/1/3/0/7/130775653/7296937.pdfIn PDF document text
    • http://laughlivelearnlove.com/uploads/1/3/0/6/130604303/7887076.pdfIn PDF document text
    • http://instrumentsonplanes.com/uploads/1/3/0/5/130588830/e718e72633ace.pdfIn PDF document text
    • http://beaconhomesandinvestments.com/uploads/1/3/0/4/130483587/fufuxeke.pdfIn PDF document text
    • http://astrov.co.uk/uploads/1/3/0/5/130547373/wijobok-jozanozatizel-wopep.pdfIn PDF document text
    • http://www.ginsengdaily.com/uploads/1/3/0/4/130488152/sokibodowi.pdfIn PDF document text
    • http://atmohomedecorthai.com/uploads/1/3/0/4/130476308/759135.pdfIn PDF document text
    • http://mail.caymanease.org/uploads/1/3/0/8/130874518/3067639.pdfIn PDF document text
    • http://mccannell.com/uploads/1/3/0/7/130776420/8b3b5cc8.pdfIn PDF document text
    • http://swamividyananda.net/uploads/1/3/0/3/130379928/5eca95fd6991c8.pdfIn PDF document text
    • http://mlhubbard.com/uploads/1/3/0/7/130738681/7085284.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_off00006032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 9288 bytes
SHA-256: 1dff2a646dffc23e125fa7e39ffe04fc9c36876525b2abb09cd310aa24b9ffc9

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