PDF static analysis report

Static analysis result for SHA-256 3495099c8b8cecf1…

SUSPICIOUS

PDF

80.2 KB Created: 2021-03-23 15:31:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 68076cd84cc1079f40243633f9dbd7b3 SHA-1: 96cd991c4bb29519fec6f509ca5c4d18fb785559 SHA-256: 3495099c8b8cecf18f6e0a1919bcebedfe7187e00279dc199d2c4b5cbfb9b29d
56 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a heuristic firing for a callback phishing phone lure, indicating it's designed to trick users into calling a provided number. The document body, though heavily obfuscated, contains references to 'Factory five 33 assembly manual' and 'wkhtmltopdf', suggesting a potential lure disguised as technical documentation. The presence of an external URI pointing to 'zajinet.ru' further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://zajinet.ru/123?utm_term=factory+five+33+assembly+manual PDF link annotation
    • https://cdn.sqhk.co/vufisolepu/chiSic5/15415248418.pdfIn PDF document text
    • http://digerutejonoju.22web.org/gate_2020_me_syllabus.pdfIn PDF document text
    • http://jogegeve.22web.org/46996652937.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/ukUgehi/nusuda.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/gihgWgf/bidisodobibabuto.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/gpohcja/sopipuxemopitusu.pdfIn PDF document text
    • https://cdn.sqhk.co/vejuwipem/jeiewgc/16458448937.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/wisuw/wanijudezok.pdfIn PDF document text
    • http://fosekor.epizy.com/google_drive_cv_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/gijuta.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/40278983390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a20b8c9-5f59-43b4-b395-8728d6fea034/fadebimisujalodole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce97ba46-83a5-4ee1-8407-c95b887058a2/as_habl_zaratustra_friedrich_nietzsche.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/tifurovuril.pdfIn PDF document text
    • http://juvotam.rf.gd/bepekilag.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/apple_airport_express.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/64772021531.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/powidalugedemixuriserije.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/wire_aprilaire_600.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/61760500703.pdfIn PDF document text
    • http://jepogedepujadul.rf.gd/formato_de_solicitud_de_certificado_de_trabajo_word.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/what_does_the_word_human_condition_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/frosty_the_snowman_lyrics_and_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3e24d94-cb0d-4c3a-bf2b-dd01853d72f9/is_dunkin_donuts_stock_a_good_buy.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/que_es_un_lider_para_nios.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_off0000f916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF916 5448 bytes
SHA-256: a1d5a40a1e68cda556d1a191cb39693bbd5ebb4a8f3f41f8481e6b1cd2a54bf0
font_01_sfnt_off00010ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA0 11756 bytes
SHA-256: 397c4f0b3c11297670c567db166ef88d4b94dab7ba42e84bd7c7054667fc9318

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