Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc8dd82ea2a6a3aa…

MALICIOUS

PDF

34.7 KB Created: 2020-03-28 06:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 56d4dd8b00957cfd7e52e6bd57dbe78e SHA-1: dc613464685bbcda8470eba12f0c85e47755ffb7 SHA-256: bc8dd82ea2a6a3aa523bcca20b8d344c4093468cf388048d766555e10f3610b9
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on different domains. This suggests a link farm or SEO poisoning tactic designed to drive traffic to potentially malicious content. The primary URL identified is http://dantoned.com/uploads/1/3/0/5/130588906/130588906.html#d+link+dsl+2750u+wireless+bridge+mode, which appears to be part of this network. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the immediate payload.

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://dantoned.com/uploads/1/3/0/5/130588906/130588906.html#d+link+dsl+2750u+wireless+bridge+mode PDF link annotation
    • http://ondutysupplyinc.com/uploads/1/3/0/4/130490808/3b327bb.pdfIn PDF document text
    • http://swank-design.com/uploads/1/3/0/8/130813800/6899580.pdfIn PDF document text
    • http://alenairl.com/uploads/1/3/0/5/130551091/gowozezeguxusemad.pdfIn PDF document text
    • http://www.blended-mamas.com/uploads/1/3/0/8/130874025/3965201.pdfIn PDF document text
    • http://claimingself.com/uploads/1/3/0/9/130969820/furolifos.pdfIn PDF document text
    • http://pigmenton.com/uploads/1/3/0/6/130605030/nevozukidafadoru.pdfIn PDF document text
    • http://www.seyahstyle.com/uploads/1/3/0/5/130539457/gaxuz.pdfIn PDF document text
    • http://bbndallas.com/uploads/1/3/0/7/130775698/954d0956a313.pdfIn PDF document text
    • http://69-183-186-243.litchfieldarc.org/uploads/1/3/0/9/130968960/kuwepolazesi.pdfIn PDF document text
    • http://altasanacion.net/uploads/1/3/0/6/130639807/eeffab0f5c.pdfIn PDF document text
    • http://themoneybitch.com/uploads/1/3/0/2/130270904/9456976.pdfIn PDF document text
    • http://mail.encuentro.social/uploads/1/3/0/6/130639659/df911df52401f44.pdfIn PDF document text
    • http://jacksonrichard.com/uploads/1/3/0/5/130588614/7648374.pdfIn PDF document text
    • http://www.boogienightz.com/uploads/1/3/0/5/130589180/vamemapapo_tizesaf_jamobaw_figikitoluno.pdfIn PDF document text
    • http://capitalimaging.ca/uploads/1/3/0/3/130323219/f0d36b3766.pdfIn PDF document text
    • http://careerrx.net/uploads/1/3/0/3/130313072/1388458.pdfIn PDF document text
    • http://communityhacking.com/uploads/1/3/0/5/130588982/getavirozotokerod.pdfIn PDF document text
    • http://oxnardpoolcleaning.com/uploads/1/3/0/6/130621193/4549170.pdfIn PDF document text
    • http://internetarchitect.net/uploads/1/3/0/6/130639571/7b7723df2846131.pdfIn PDF document text
    • http://electeslinger.com/uploads/1/3/1/0/131070491/39353e7fce19b3.pdfIn PDF document text
    • http://randimoniumshow.com/uploads/1/3/0/3/130379178/vukex.pdfIn PDF document text
    • http://winlifenow.com/uploads/1/3/0/6/130639083/6503631.pdfIn PDF document text
    • http://simplybeautifulcreations.com/uploads/1/3/0/6/130604651/sofojosebebawetoti.pdfIn PDF document text
    • http://nakedpavementbooks.com/uploads/1/3/0/4/130488700/e7230d71f537.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 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_off000060e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E6 7108 bytes
SHA-256: 2cf5c694e44e2def2100ab9f4e39252ef5fe11a4a94f09d01e100911eb243b58

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