Malicious PDF — malware analysis report

Static analysis result for SHA-256 301e898079db19b4…

MALICIOUS

PDF

65.7 KB Created: 2021-03-27 18:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: fa8daa843e398fe39a6ed91ff38e7fa2 SHA-1: 9967c0051e196c007dd1d6846705a25399286688 SHA-256: 301e898079db19b45b7579545547e920de00fa13c92bb6350781851a53809df2
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs pointing to suspicious domains, including one that appears to be a link farm designed for SEO manipulation. The document body, though heavily obfuscated, suggests a lure related to 'eat stop eat pdf download free', indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/wix?keyword=eat+stop+eat+pdf+download+free PDF link annotation
    • https://cdn.sqhk.co/togodawexu/hejhGox/speed_sculpt_blender_tutorial.pdfIn PDF document text
    • http://hookup154.space/cartoon_animations_for_powerpoint_freebprsn.pdfIn PDF document text
    • http://nashremont.site/10087580419rjrr2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426075/normal_603a08f8ef9c4.pdfIn PDF document text
    • http://xilasojere.iblogger.org/78040853460.pdfIn PDF document text
    • http://ogranicbio.fun/gobiwalumizms1qo.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/eidhdIP/sstar_fall_river_covid_testing_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/jonilinenuvo/DVSgjev/63670390819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_605655e65845a.pdfIn PDF document text
    • http://vquest.website/doselomu297w5.pdfIn PDF document text
    • https://cdn.sqhk.co/wanukawuwota/MTPjfGc/how_to_get_free_wifi_internet_at_home.pdfIn PDF document text
    • http://pidebuzuvufugi.22web.org/ffxiv_invocateur_guide.pdfIn PDF document text
    • http://belldiscount.ru/dwi_nhtsa_manualumhy8.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/dANFijW/death_road_to_canada_extreme_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5fd2cbd2e0f35.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://681956c7-2c57-495f-b996-d04b50c745b0.filesusr.com/ugd/907d98_892a90488ec5468d99df9d564ed3d0fc.pdf?index=trueIn PDF document text
    • https://f635e5d9-31b1-4f19-b758-7a623be10181.filesusr.com/ugd/6cf0f5_fe6808347f594d2098a324cee5ab3b8a.pdf?index=trueIn PDF document text
    • https://0aed7b51-d02b-4864-a6bb-b478bb809667.filesusr.com/ugd/fbdaab_a3bf512ed4874948b7d35efb76545e99.pdf?index=trueIn PDF document text
    • http://tumofif.rf.gd/information_by_oxford_dictionary.pdfIn PDF document text
    • http://bilozepe.rf.gd/93486833485.pdfIn PDF document text
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_203851f4d7de49f28eda586d685ed11d.pdf?index=trueIn PDF document text
    • http://mujewuliruj.epizy.com/senefu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC592 5084 bytes
SHA-256: 5d8f8315869f17f41770bce4019705f8ca9a18af2c43b491323fb481a93164f1
font_01_sfnt_off0000d703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD703 9588 bytes
SHA-256: c0b0b6c7022bbf5cf6b0197b275b718c1a3da06c1deff89e1a7a0c06a1f3bd83

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