Malicious PDF — malware analysis report

Static analysis result for SHA-256 1120262a42956814…

MALICIOUS

PDF

66.0 KB Created: 2021-02-13 17:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4d799e9d1e8796138287b5e79f1eda85 SHA-1: 97f53e8365ea493cadb9de48bad07bc4606ef163 SHA-256: 1120262a42956814434d7da58b3b5223ee8ba9f307eef30d4b9485a2c09f3cf0
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://baarspo.ru/wix?keyword=family+therapy+an+overview+9th+edition+free+pdf PDF link annotation
    • https://cdn.sqhk.co/pusuvizodez/p4hfuso/8497037725.pdfIn PDF document text
    • http://verifiedbadges-form.com/sonic_heroes_gamecube_downloadeetfg.pdfIn PDF document text
    • http://wubopabezijoso.22web.org/fizibulekazorufidamij.pdfIn PDF document text
    • http://ludivabuka.iblogger.org/ata_hypothyroidism_guidelines_2014.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/N7hg6Ub/eastern_iowa_gazette_obits.pdfIn PDF document text
    • http://fozogadixanemo.iblogger.org/african_cup_of_nations_2019_schedule.pdfIn PDF document text
    • http://nuredalad.iblogger.org/auto_transformer_starting_of_induction_motor.pdfIn PDF document text
    • http://francobusiness.com/colour_wheel_templatex56o2.pdfIn PDF document text
    • https://cdn.sqhk.co/furaxofir/jcjcFBQ/22750260815.pdfIn PDF document text
    • http://wowit.pro/517411909580xt6y.pdfIn PDF document text
    • http://evakuator-uga.ru/okami_devil_gate_trialmmsez.pdfIn PDF document text
    • http://vabetovopux.66ghz.com/46636279330.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sukotibovaj.epizy.com/xonejesususizadimonoruma.pdfIn PDF document text
    • http://farujage.epizy.com/negedi.pdfIn PDF document text
    • http://bedawisanono.epizy.com/piwabeje.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/pugevonudigikiv.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC829 5468 bytes
SHA-256: 5fd7a797f056cccefaf3eed5c83444fe85d3009da1523b9a81f4d1d36c9fd5d2
font_01_sfnt_off0000dab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB7 9452 bytes
SHA-256: dcc05a4552d1b5337a70a57ee1b4c2f73ca63acde7022f99ae12caa34f324bb2

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