Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe35193f68564278…

MALICIOUS

PDF

83.2 KB Created: 2021-05-07 10:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 611f9ff27b8443c8dbe4dc5f6330ed5c SHA-1: 99ce3e0be2b1b6a6f70b34218be779df30741d6c SHA-256: fe35193f685642780533ac15be8a2b4b930cd86917d8866f76539a0c06a0fb0c
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains a link farm and specifically impersonates Walmart to lure users to a redirector URL, likely for credential phishing. The document body, though partially obfuscated, contains text related to Planet Fitness membership, suggesting a lure to a fake login or information-gathering page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://bigadamedoje.weebly.com/uploads/1/3/1/3/131384249/05204bf2fce9.pdf.
  • 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://druttle.ru/strik?utm_term=can+you+get+a+planet+fitness+membership+under+18 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501991/normal_603a1d8312bba.pdfIn PDF document text
    • https://bigadamedoje.weebly.com/uploads/1/3/1/3/131384249/05204bf2fce9.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/4Tja5if/favuz.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/OgCijTc/best_lagu_didi_kempot_terbaru_2019_mp3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455886/normal_5fcaad5a17ce4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473938/normal_5fd2aa92bc882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504870/normal_604669b1dda4d.pdfIn PDF document text
    • https://tumunonapuve.weebly.com/uploads/1/3/1/3/131379134/4e149ea5ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447888/normal_6027df99758b3.pdfIn PDF document text
    • https://cdn.sqhk.co/rizakumer/Z3jagh7/smiling_glasses_emoji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_602d818e2ff93.pdfIn PDF document text
    • https://rakonudiboxenej.weebly.com/uploads/1/3/4/8/134874851/kekakap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dc0892a-0490-427d-b140-a754f4607458/lutukaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/222a5fb8-6d38-4dd9-bc84-430628bd35bf/for_dummies_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/780f5717-55fb-4d4e-a84e-4fb9dfdd962a/how_to_write_a_peel_paragraph_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5763c0e0-4fb3-4cc4-b0fd-02f452c08243/best_ar_15_magazine_speed_loader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a93e3ac5-84c6-43bf-ad89-ae3c42feb4ef/what_is_the_composition_of_a_rock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb1bfef-377b-468d-861e-13b2d5de46dc/2017_lexus_gs_350_f_sport_awd_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f7d6e4-103a-464f-bced-b5c3e08121cc/werewolf_build_dnd_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daaf8f45-db93-4133-90a4-3424d077d4bf/how_to_calculate_the_volume_of_a_cube_in_litres.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_off000102f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F5 5848 bytes
SHA-256: 9d00f47c487d36a7e15c5d0bc4bfa6d2863ff10996380f457900a6a0c2648acb
font_01_sfnt_off000116bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116BD 11796 bytes
SHA-256: 52663c62d5473303d961119d9215b211dc37b6abfa0b411b9f2ef2f15e79ad9b