Malicious PDF — malware analysis report

Static analysis result for SHA-256 83dad2daa546d131…

MALICIOUS

PDF

73.2 KB Created: 2021-03-10 08:14:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 93b23aded675983c9f113ba288d31d84 SHA-1: e9d0d1dddb13201ccde4528be07cde45d0df5d03 SHA-256: 83dad2daa546d1310a068ea592f3e158f1d8286bd4d96255f4d6b531c0b307ff
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, many of which are hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to reference a 'land rover lr2 service manual pdf', which is likely a lure to entice users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=land+rover+lr2+service+manual+pdf PDF link annotation
    • http://straponartist.com/anne_rice_the_witching_hour_books7oucg.pdfIn PDF document text
    • http://meetdouche.xyz/scratch_2_offline_editor_pcge2zm.pdfIn PDF document text
    • http://buwovavozu.getenjoyment.net/76257630527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5fd650b8a7f24.pdfIn PDF document text
    • http://voztrans.ru/bupufhv4bo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_6017270370238.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/lebopowebelafezulova.pdfIn PDF document text
    • http://jajifejeda.22web.org/aeneid_fitzgerald.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/what_is_gutter_margin_answer_mcqjc65s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392439/normal_600655911e681.pdfIn PDF document text
    • http://rexuwoxaga.sportsontheweb.net/75791740770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384484/normal_600f06394d87f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_60402506d6f3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/which_is_the_best_app_for_learning_english_free.pdfIn PDF document text
    • http://zalezir.epizy.com/fofoxaguvul.pdfIn PDF document text
    • http://gataluxogawix.epizy.com/xojebusuvixomaloxotefomu.pdfIn PDF document text
    • http://texokobatogu.epizy.com/gujenolalojat.pdfIn PDF document text
    • http://rorazizaxaf.atwebpages.com/the_devotion_of_suspect_x_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/archicad_12_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/56566390885.pdfIn PDF document text
    • http://fisumude.rf.gd/challenger_sales_email_template.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_off0000e2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FD 5432 bytes
SHA-256: 46e73f8db8e3213d81bf96f433df8b55a5bacf659f6e6970386ae16461248190
font_01_sfnt_off0000f572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF572 9972 bytes
SHA-256: c533b6a491d729c88991d6722684c5b5065e289ff6e69fc54b465a4dda401799

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