Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5dfd2cd68b9515f…

MALICIOUS

PDF

40.4 KB Created: 2020-03-10 09:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-10
MD5: ed89ad7c328878346efa980f436c0cf4 SHA-1: 7d014beef3ca363c93164c395e249dd3d12bc230 SHA-256: f5dfd2cd68b9515f4768b1cec1b2e9871ed31fb47a4e71ba89e2a1dd4a7dc7e6
104 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, many of which are numerically slugged and appear to be part of a link farm. One of the embedded URLs, presented as a job description, is likely a lure to direct the user to a malicious site. The heuristic 'SE_INVOICE_LURE' further suggests a deceptive intent, possibly related to payment or financial matters.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://gibbsmanagementgroup.com/uploads/1/3/0/8/130814115/130814115.html#sr+accounts+payable+specialist+job+description PDF link annotation
    • http://mmflackdesigns.com/uploads/1/3/0/4/130488311/2058850.pdfIn PDF document text
    • http://mail.courtneyanderson.com/uploads/1/3/0/6/130640048/8438843.pdfIn PDF document text
    • http://readymum.com/uploads/1/3/0/7/130739288/ceff78d6.pdfIn PDF document text
    • http://leaningsilo.com/uploads/1/3/0/8/130873860/7675339.pdfIn PDF document text
    • http://www.cutebernedoodles.com/uploads/1/3/0/7/130775880/6960624.pdfIn PDF document text
    • http://colorado-es.com/uploads/1/3/0/6/130604877/zawij.pdfIn PDF document text
    • http://becausegoodness.com/uploads/1/3/0/3/130313634/6113220.pdfIn PDF document text
    • http://geologiaeconsolidamenti.com/uploads/1/3/0/4/130436152/987c85fa23a38b.pdfIn PDF document text
    • http://www.colourmekrazy.co.uk/uploads/1/3/0/8/130815014/mavofodo.pdfIn PDF document text
    • http://nurseled.com/uploads/1/3/0/7/130775021/mowaru.pdfIn PDF document text
    • http://steeleharbor.net/uploads/1/3/0/8/130874113/nozipemewata.pdfIn PDF document text
    • http://9f60hmh065.com/uploads/1/3/0/7/130776078/fiwovukasap-gumemepu.pdfIn PDF document text
    • http://www.tinaglialaw.com/uploads/1/3/0/6/130640235/5433996.pdfIn PDF document text
    • http://www.brentwoodacctng.com/uploads/1/3/0/3/130312919/wepagoxaxitaparo.pdfIn PDF document text
    • http://thebirthbee.com/uploads/1/3/0/5/130550857/dibisiwijakek.pdfIn PDF document text
    • http://www.votesmith-tyge.com/uploads/1/3/0/7/130738666/8e1eeeb455ee82.pdfIn PDF document text
    • http://mta-sts.mail.allforonefoundation.org/uploads/1/3/0/3/130313066/1cf3d540b48c9.pdfIn PDF document text
    • http://montbros.com/uploads/1/3/0/2/130272330/f1ec9.pdfIn PDF document text
    • http://treejosh.com/uploads/1/3/0/3/130313145/617dc9fc2.pdfIn PDF document text
    • http://hotwifequeenofspades.com/uploads/1/3/0/3/130323409/foxofinozaj.pdfIn PDF document text
    • http://thefriendlypear.com/uploads/1/3/0/2/130289365/a853eb7e390c3.pdfIn PDF document text
    • http://planetlearning.org/uploads/1/3/0/7/130739830/29df7.pdfIn PDF document text
    • http://inspire-and-empower.com/uploads/1/3/0/6/130603807/jugimele.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 8

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_off000076c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C5 7384 bytes
SHA-256: 0f09d8df245216b73c260fe3bee6cbc3c698d6380d2a86af15a5edaca99e566d

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