Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c8aa374e1c8178…

MALICIOUS

PDF

45.6 KB Created: 2020-10-26 05:53:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0d84aa55b114036f7eb0b608b4b06279 SHA-1: 3deab89e3b9818971e67753627461a540767d01b SHA-256: 78c8aa374e1c8178c1e39776c5411faa7cf8406bee185716fdfe94d773479054
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/aws?keyword=ankara+map+pdf In PDF document text
    • https://setekonireza.weebly.com/uploads/1/3/4/1/134131298/vepilujur_rasuziwanev.pdfIn PDF document text
    • https://suretazusidik.weebly.com/uploads/1/3/4/0/134012564/50d428cd85.pdfIn PDF document text
    • https://bebamewikirebu.weebly.com/uploads/1/3/0/8/130874540/8627409.pdfIn PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/4241264.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/3662564.pdfIn PDF document text
    • https://norudajesopoz.weebly.com/uploads/1/3/4/3/134340776/biveguboxawimekow.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/9156078.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/fapobe-tutirikalekaluj-loxamu-pobusoke.pdfIn PDF document text
    • https://sibikobibe.weebly.com/uploads/1/3/4/0/134040949/e23d87.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/goroza.pdfIn PDF document text
    • https://murudogukezopo.weebly.com/uploads/1/3/4/3/134320821/setamapajed.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000071f9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000071f9.bin)
    • https://s3.amazonaws.com/tesasubawalozan/still_yet_already_anymore_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/learning_javascript_design_patterns_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/48295173049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/wilbur_curtis_parts_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6041/files/wegovunumepalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3478/6971/files/kisa_sohma_cosplay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6729/1816/files/23053635476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cec95af-e849-432a-bf05-dc812efbf9eb/88466042846.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2ec3ae-dba5-42af-91ca-29c9a3301e02/gujuwikupomefe.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 extracted file (font_00_sfnt_off000071f9.bin)

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_off000071f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F9 5028 bytes
SHA-256: d8ce3489fbd070bacf2b014d527e77910f7a92d57e8d793b8c22b2f17d284c07
font_01_sfnt_off000082ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FF 11480 bytes
SHA-256: 95c37938bfd32622992a8875df50edc005d36c49e627df11f7ad7781af38f72c

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