Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad29c92b25def6c…

MALICIOUS

PDF

36.7 KB Created: 2020-05-23 22:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 659a108b224d3c7f6c1d2a15667a59e4 SHA-1: fd649796f91afb560754537ae13346d4a40826fa SHA-256: fad29c92b25def6c6797180b1b0c2648ebcee016d8140387b04d2fe5e2210726
96 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 structured as a link farm. The document body text and one of the extracted URLs, 'http://strongwithoutrealising.info/uploads/1/3/0/9/130969884/130969884.html#fhm+magazine+subscription+philippines', suggest a lure for magazine subscriptions. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a large number of links, likely for SEO manipulation or to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://strongwithoutrealising.info/uploads/1/3/0/9/130969884/130969884.html#fhm+magazine+subscription+philippines PDF link annotation
    • http://thedavidgiang.com/uploads/1/3/0/7/130775961/e82cc0289e6e9ba.pdfIn PDF document text
    • http://scoutcommunity.net/uploads/1/3/0/7/130775639/2409657.pdfIn PDF document text
    • http://globalstory2films.com/uploads/1/3/0/4/130489006/biseg_semaziri.pdfIn PDF document text
    • http://jordan.home-views.com/uploads/1/3/1/4/131407704/f73b55ebcaea5b.pdfIn PDF document text
    • http://artbymetanya.com/uploads/1/3/0/5/130550706/9cb4ab.pdfIn PDF document text
    • http://faerielife.me/uploads/1/3/0/6/130604699/48534a34bcf2f5.pdfIn PDF document text
    • http://maryolshahad.com/uploads/1/3/0/7/130739731/pidawopulu.pdfIn PDF document text
    • http://westlandsleisurefacilities.com/uploads/1/3/0/4/130483194/2f8844090.pdfIn PDF document text
    • http://irwinparktreehouse.org/uploads/1/3/1/4/131453454/kisubur.pdfIn PDF document text
    • http://lovemehemp.net/uploads/1/3/0/2/130270957/tepezimi_rerozaxejo_nigega_vukipitav.pdfIn PDF document text
    • http://extendedlovecare.org/uploads/1/3/0/6/130639914/sigiwibo.pdfIn PDF document text
    • http://hregan.com/uploads/1/3/1/8/131856907/gibexomefimi.pdfIn PDF document text
    • http://hostmaster.valley-farm.co.uk/uploads/1/3/0/6/130640181/xupivumus_posefivememirim_newamowomapokoj.pdfIn PDF document text
    • http://myinsanechaoticlife.com/uploads/1/3/0/5/130590561/dba9513c2f488f.pdfIn PDF document text
    • http://msfullfiguredvapageant.com/uploads/1/3/1/0/131070186/1482911.pdfIn PDF document text
    • http://taximurfreesboro.com/uploads/1/3/0/5/130551922/xawod-sasukujogenu-fidununowazobi.pdfIn PDF document text
    • http://grambogames.com/uploads/1/3/0/5/130544694/6280284.pdfIn PDF document text
    • http://wicklowpartners.com/uploads/1/3/0/6/130639729/degawel-nulitabosa.pdfIn PDF document text
    • http://adeptthinking.com/uploads/1/3/0/4/130489075/f18dd109a8605.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 3

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_off00006323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 10392 bytes
SHA-256: 385cc275a26581da7fd3c992c4504be9e1f6a4906bb034ac906ee2eb4ab4fe47

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