Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5812a8ab1f8ca14…

MALICIOUS

PDF

86.2 KB Created: 2021-03-31 09:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9dae1835d234560baf21def8dda87eda SHA-1: 3f7ca50ae03c19493eac2921ef88e160c4d0505d SHA-256: f5812a8ab1f8ca1462a51491f514fc0a3f1d5b0a949e294e9b2352683c9b8a83
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 phishing or trojan threat. It contains an embedded URI pointing to a URL that impersonates a "Bowflex manual pdf" to deceive the user. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=bowflex+manual+pdf PDF link annotation
    • http://shtangelkipokupkiitd.online/sanidry_crawl_space_dehumidifier_reviews5habm.pdfIn PDF document text
    • http://ru-1.casa/when_two_or_more_atoms_join_together_they_formesvsp.pdfIn PDF document text
    • http://help-verification.com/how_to_redeem_a_code_pokemon_goaykrk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444852/normal_601a2a5ec770a.pdfIn PDF document text
    • http://mini-cam-v2.club/76485486795aa93l.pdfIn PDF document text
    • http://kijofizovurisos.medianewsonline.com/aprendizajes_clave_segundo_grado_primaria.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_6032c25457b42.pdfIn PDF document text
    • http://natiral.space/gw2_griffon_mount_unlock_guideu1ixw.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/xalexojaxipud/womavulotepawalix.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/63341755333.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/how_to_crochet_scarf_patterns_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/marriage_certificate_online_kolkata.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/food_handlers_card_practice_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/79495825396.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/why_is_my_john_deere_mower_not_starting.pdfIn PDF document text
    • http://joberemig.atwebpages.com/mass_general_anesthesia.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AE 9960 bytes
SHA-256: 062794621e5b11b9c64b634e8968fcd11649a4fb3974f9193a2ab60d1af198ef
font_01_sfnt_off000107dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DC 5124 bytes
SHA-256: 6d02c9b1e6bd8ef2f71b20e25583307d369d5492684a07acde305bfccd2aff97
font_02_sfnt_off0001194d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1194D 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_03_sfnt_off000121db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DB 11652 bytes
SHA-256: c356fdd176d7b4534dd67ac4d2ee60352c3341caaa32c14ec6ce6249d1b3d62b

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