Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d56dc2edb504216…

MALICIOUS

PDF

41.1 KB Created: 2020-10-07 01:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1d1ffcef8ee49cf629a3e75f939aa92d SHA-1: ce0b76146b9f02bbdf776b848da616c2a240f066 SHA-256: 4d56dc2edb50421678e068e072e6b0a6bb36b9c624ea92e3d051200a54b9da21
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=ina+linear+ball+bearing+catalogue+pdf In PDF document text
    • https://site-1038627.mozfiles.com/files/1038627/32017383374.pdfIn PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/78319290266.pdfIn PDF document text
    • https://site-1036972.mozfiles.com/files/1036972/53235296914.pdfIn PDF document text
    • https://site-1039378.mozfiles.com/files/1039378/93782882406.pdfIn PDF document text
    • https://site-1040506.mozfiles.com/files/1040506/laforuzageporarika.pdfIn PDF document text
    • http://files.on-sitept.com/uploads/1/3/1/4/131407051/pijomamarara-dewoxiwijolaz-neribovadefar-lofumivid.pdfIn PDF document text
    • http://files.i-wave.ca/uploads/1/3/2/6/132683088/4ad1c04a0f1e3.pdfIn PDF document text
    • http://severiju.kathaleenkateoliverson.com/uploads/1/3/1/1/131163599/gugov-lowiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/5249/7827/files/plastic_engagement_rings_bulk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/51072834195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8323/8049/files/robot_unicorn_attack_3_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/lusidifivekare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba94c65b-2691-4b7c-837e-086c650cf656/9351961689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e3dd925-62c4-4853-a31a-40bd9eaf55e1/muvenivakizogepagiwinuxiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcf122ab-a091-4d4c-b16f-d8a3c9bed9fd/66976276790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b826a394-cc7a-47e0-b789-f6ab5d122c3c/rotezudunefegazile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a8650ec-2d29-4c25-87f8-acdf6da05108/vanesemodumuwubibuj.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_off000061ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 5220 bytes
SHA-256: bf4e4ee303b0c28928f9eab1a888ebb9b8e2bae11f63c2ccbae30d3e877166ca
font_01_sfnt_off0000739e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739E 10396 bytes
SHA-256: e3eb93af008a5ac6b4bfd0381aa18ed91dc17b4c24a8582924a0f8ce1a58cde5