Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e70dfdbc651bb3…

MALICIOUS

PDF

78.1 KB Created: 2021-03-10 23:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 642642ffc133552f75e665009f4f9274 SHA-1: 2502050d96aa5c05f2c10a5ebc5f5b86ea69c6f0 SHA-256: f6e70dfdbc651bb3158ddb576da7d9f57ffaf20b8e327e823572bbfbebbee641
136 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, specifically flagged as a phishing trojan. It contains an embedded link disguised as a lure related to the 'Mary Shelley Frankenstein movie', which redirects to a suspicious URL. This suggests an attempt to trick users into visiting a malicious site, likely for credential harvesting or further payload delivery.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://mezovuduw.ru/strik?utm_term=mary+shelley+frankenstein+movie+elle+fanning PDF link annotation
    • http://zadonito.iblogger.org/buxexakobadumizupurut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482230/normal_6003bed8413c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_601a09cd61225.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416790/normal_5fe3072f007bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390999/normal_60304c4961bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452171/normal_603e97bef0980.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461216/normal_5ff04acb6d1ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_602a01cc35492.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417216/normal_6007739809f76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455185/normal_5fdb765404905.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421780/normal_600bc9519a129.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f6a99676-4220-403c-a51f-cf8469746c7b/ford_mustang_gt500_top_speed_km_h.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/corel_x4_keygen_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4adec78-ac22-4e86-b6e4-892b34ec88c9/how_many_red_face_cards_are_there_in_a_deck_of_52_cards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2361748-5a26-481f-ba5f-32330a1498c8/what_is_the_second_step_in_the_pre-production_stage_in_filming.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/tekonsha_voyager_brake_controller_owner_s_manual.pdfIn PDF document text
    • http://gumelojapa.epizy.com/53827836946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28a77598-122b-4f05-903b-609d4fcd4c62/81455018288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4755c180-025c-4bad-90ce-452778f40bb3/98880954713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00257caf-39e6-499c-a7ed-9c45d179da6c/85596395962.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE541 5200 bytes
SHA-256: aaf263a4ef82ebd0ebf81b47005625337b98c69bd110d831971db52d06c85a9c
font_01_sfnt_off0000f6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D4 11072 bytes
SHA-256: 92d081cfe4b5fb1645ef0247495cb9bd6d62bb7a4627bd23bef95aec3852e253
font_02_sfnt_off00011c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C3E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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