Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2101ca168710549…

MALICIOUS

PDF

79.2 KB Created: 2021-03-15 01:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8ce567e66e2b94fa851d7b68ac4bed98 SHA-1: dce7ef6dfb72f28870406348911429bb4f96cb04 SHA-256: d2101ca168710549c6bedbac83a0f296c4d9b7d658a312d6e20c7dfefe332342
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 flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'fokemale.ru'. The document body, though heavily obfuscated, suggests a lure related to flashing lights, likely to entice clicks on the embedded 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://fokemale.ru/strik?utm_term=why+do+my+lights+keep+flashing PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4406170/normal_5ffa1104e7470.pdfIn PDF document text
    • http://zajapokel.22web.org/59579442088.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393035/normal_5fc8a158a804d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417530/normal_602b8a0418d2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421611/normal_5fdf0a16d36aa.pdfIn PDF document text
    • https://kugasesilij.weebly.com/uploads/1/3/4/7/134702015/232374.pdfIn PDF document text
    • https://pesiwuveso.weebly.com/uploads/1/3/5/3/135392822/gosoraki-lasosulunu-letuzup-zojug.pdfIn PDF document text
    • https://tawugeri.weebly.com/uploads/1/3/4/7/134774142/zuvijimijatinageviv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://soburuwukipo.epizy.com/wipekefupejevoxibabisifev.pdfIn PDF document text
    • http://wetoxisifogif.epizy.com/easy_maths_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/jaipur_national_university_mba_assignments_answers.pdfIn PDF document text
    • http://sisuraregimu.rf.gd/risidaderefitilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3abec5c-6204-4e52-a146-a3ada9d76c0f/the_mask_of_the_red_death.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/harga_avanza_2014_type_g_manual_medan.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/aws_kinesis_firehose_cloudformation_template.pdfIn PDF document text
    • http://delujub.rf.gd/70191529297.pdfIn PDF document text
    • http://kepinud.rf.gd/sherawali_mata_ji_ki_aarti.pdfIn PDF document text
    • http://mutojux.epizy.com/facebook_apk_apk4fun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c97e0bc4-30ed-44e5-8418-41fd82a2c91f/what_size_tires_fit_a_2009_ford_focus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79e0334b-ba28-4b93-b703-19168f327d44/convertir_pulgadas_en_centimetros_cuadrados.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f90306c8-ac74-4377-930a-f7bbea10b206/how_to_reset_a_capello_alarm_clock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf35bf3-ba18-440d-92f6-08feaae49cc7/gubuvodujigafawomiwuwesaw.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_off0000f564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF564 5536 bytes
SHA-256: 5042e1d141da94ccea8efd1217960243c7ce35a5d84e10a207341be97126e77f
font_01_sfnt_off00010833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10833 11704 bytes
SHA-256: 9a70af234912f531337bda894faf5dbe90f57bc238e7fcd79d33d0c6d34c1416

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