Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0614cff36a18b8a…

MALICIOUS

PDF

85.4 KB Created: 2021-02-06 20:19:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 83af187cdc164daaaa5c6d93288bd632 SHA-1: 7b7d73fa08546b724cf43d6e2d11bbaa2f376279 SHA-256: d0614cff36a18b8a69390559e698657ab65541ff98f4c684504e0c1ddae9ca80
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, with a notable heuristic firing for a link farm on disposable hosting, suggesting an attempt to distribute malicious content or phish for information. The presence of embedded URLs and the overall structure point towards a malicious document designed to trick users into downloading further payloads.

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://crophysi.ru/123?utm_term=pokemon+ash+gray+guide+download+gba PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481839/normal_5fcf50f5a319a.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/hfBjbha/amazon_movie_prime_free_trial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477635/normal_5fe7d8cf3d961.pdfIn PDF document text
    • https://cdn.sqhk.co/bojidokagivi/dhhhbqz/xedisiteresoguf.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/igDgije/xilujajeja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410217/normal_5fe56f6d6804a.pdfIn PDF document text
    • https://cdn.sqhk.co/takakakod/ajdhjWI/82032595428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455194/normal_6013158cedd02.pdfIn PDF document text
    • http://znatural.space/oconus_gs_pay_scaledtyla.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425504/normal_5feb941d47a5f.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/Angeejh/miwito.pdfIn PDF document text
    • http://housefashion.ru/penaxesuvvc69j.pdfIn PDF document text
    • http://vemafenuxaj.22web.org/48649262557.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pavosalilob.rf.gd/nice_guidelines_pancreatic_cancer_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/vagetuwig.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/40094322167.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/dobavulete.pdfIn PDF document text
    • http://nudenagazosizav.epizy.com/11925099781.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/imperial_city_prison_vet_guide.pdfIn PDF document text
    • http://tofezaniv.rf.gd/61348328939.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001001f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1001F 5440 bytes
SHA-256: bd48adc1af0ccf6967e943fe034dea1a308a66cd8480b40613993ae0578d7657
font_01_sfnt_off0001126f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126F 11304 bytes
SHA-256: 22b50a478ae1957689aa0b9a722f79d2c2ef5ac495631534175fc64bb86819f7
font_02_sfnt_off00013871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13871 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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