Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc196369adad09c…

MALICIOUS

PDF

40.0 KB Created: 2020-03-23 06:38:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 9e3711905d2bc216f9ada44fcf09d083 SHA-1: 8d6e316b73bce728fde77a6727930c4fddc54962 SHA-256: dcc196369adad09c7db621ef73e685860b6207a0cbb3e9232fafd023ef4c3f22
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes a URL that points to a similar structure of external links. This suggests the primary purpose is to redirect users to a network of linked PDF files, likely for SEO spam or to distribute further malicious content. No scripts were extracted from this sample.

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://gmchamberpatrons.com/uploads/1/3/0/3/130379488/130379488.html#como+se+resuelven+las+divisiones+de+fracciones+mixtas PDF link annotation
    • http://lnjcivilsltd.com/uploads/1/3/0/6/130604117/wuzekofejo.pdfIn PDF document text
    • http://rvtrailertires.net/uploads/1/3/0/2/130288455/c1befab.pdfIn PDF document text
    • http://elyaqui.org/uploads/1/3/0/5/130543318/xolubadu_golijipajekozu_domupuditiko_jaragi.pdfIn PDF document text
    • http://webdisk.theaterleagueofclifton.com/uploads/1/3/0/6/130620882/surimuguwes.pdfIn PDF document text
    • http://www.serenityvalley.farm/uploads/1/3/1/0/131071297/jebomivobosogobukow.pdfIn PDF document text
    • http://santaclaritascreenprinting.com/uploads/1/3/0/3/130323199/temavage.pdfIn PDF document text
    • http://marcaribe.net/uploads/1/3/0/5/130588332/bupegobirakixafi.pdfIn PDF document text
    • http://herrinsbc.com/uploads/1/3/0/5/130588494/4665359.pdfIn PDF document text
    • http://www.geraldobrienlaw.com/uploads/1/3/0/6/130621749/f70d5ecbcf4.pdfIn PDF document text
    • http://aylaspirityoga.com/uploads/1/3/0/2/130273872/sufilamom_nebevelam_wuzararazimajiv.pdfIn PDF document text
    • http://immediateinsight.org/uploads/1/3/0/4/130435820/julube_zuxasatiligugab.pdfIn PDF document text
    • http://thebunnybin.ca/uploads/1/3/0/8/130814706/8b75019.pdfIn PDF document text
    • http://www.gregoryjanis.com/uploads/1/3/0/7/130738884/xebesanidibinepusode.pdfIn PDF document text
    • http://condosinmanila.com/uploads/1/3/0/6/130621944/rijuwuwoxuw_donaxizufejuta_nosekitewum_tibanadetuve.pdfIn PDF document text
    • http://philanthropy.se/uploads/1/3/0/7/130738637/fajana_tetebogakewom.pdfIn PDF document text
    • http://rockandrollhs.com/uploads/1/3/0/4/130436074/lesuxerudob.pdfIn PDF document text
    • http://homemortgage.services/uploads/1/3/0/3/130323196/8882539.pdfIn PDF document text
    • http://partyblitzindiana.com/uploads/1/3/0/6/130620669/nelejodi_bikonelev.pdfIn PDF document text
    • http://www.mylegalshieldscam.com/uploads/1/3/0/3/130313728/fusevuj_wesabu.pdfIn PDF document text
    • http://matsigura.net/uploads/1/3/0/7/130776307/96df48a0.pdfIn PDF document text
    • http://sunnycaregivingservices.net/uploads/1/3/1/1/131163540/xifure-jagivokokesemi.pdfIn PDF document text
    • http://clabosier.com/uploads/1/3/0/8/130813829/difolovakus_sogosap_vefisezuluxeril.pdfIn PDF document text
    • http://nowpixapp.com/uploads/1/3/0/4/130488401/2985185.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_off0000734a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734A 7804 bytes
SHA-256: f236e34e4e35cbf177ef9e8d05b466cf898d03551b93e754f9bd18264d570d84

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