Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f6ca1bd7eb664d…

MALICIOUS

PDF

42.5 KB Created: 2020-10-07 11:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dceb49ce42196ecfddab1c5e3d70c05c SHA-1: 50c252f56f0602743e82869c96f71495bceab33d SHA-256: d1f6ca1bd7eb664d09160921dde5ab499cc95bab33304282edc697c723cd97b5
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=amazing+tales+rpg+pdf+free In PDF document text
    • http://files.mcmillansofmalton.co.uk/uploads/1/3/1/8/131856706/7898613.pdfIn PDF document text
    • http://muzimaw.leadleaderlead.net/uploads/1/3/1/6/131606490/249d83b6a58c0.pdfIn PDF document text
    • http://files.lldrq.com/uploads/1/3/1/1/131163561/5497018.pdfIn PDF document text
    • http://files.whitneyhorrocksfineart.com/uploads/1/3/0/7/130740193/dfd8c03.pdfIn PDF document text
    • http://files.mrsdanabeck.com/uploads/1/3/1/3/131384424/97ed971f5336b5c.pdfIn PDF document text
    • http://nanawire.camerasforconservation.com/uploads/1/3/1/1/131163725/zojej_tuwijudu_nulezesuxaniw.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/b4ab750d-603f-4a4c-ba56-9023bce04c35/wizinatibetovojutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7cd2a31-4d2e-4678-9c51-ee72e6262d5a/35163551809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b575de9-5d8d-4b08-9196-e6de6def61ea/jitojiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e679ca0c-1e06-44eb-9934-2901b5ecc8c1/96899622190.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0efde0f3-5d00-4937-add0-9720501ec6b4/xusujot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3042/6012/files/mount_vernon_east_metro_north_train_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7182/files/8522244258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9416/2590/files/lowibezovajiragiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9646/5823/files/gakixadubegajitanomufuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8652/3815/files/56415741508.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_off0000677c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677C 5400 bytes
SHA-256: 4148e2945085d245ea3a586a6500b14534eb2c65d0106f60adfd65b9b252dd6d
font_01_sfnt_off000079ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CA 10256 bytes
SHA-256: b3e6e9b576074a07e477334159d079407c505b992616c0e0917552af71d4c4c1

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