Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3e9310b8d61e2e…

MALICIOUS

PDF

34.6 KB Created: 2020-11-03 05:05:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 98c38bfcfeba64176164fbed537ed875 SHA-1: 756ee36dd50e98ff76ad6a31ecdeb5fa312357e2 SHA-256: dd3e9310b8d61e2e808ca56d2984d107459b9ea3af4986745ea1ef8d6d68939c
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://ttraff.me/pify?keyword=total+gym+2000+manual+pdf In PDF document text
    • https://tivexafo.weebly.com/uploads/1/3/4/3/134348633/4354184.pdfIn PDF document text
    • https://jokineviraxara.weebly.com/uploads/1/3/4/2/134265776/9021817.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/5954599.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/6389683.pdfIn PDF document text
    • https://zefubolinela.weebly.com/uploads/1/3/4/3/134318842/3986828.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/hobowars_hoburbia_adventure_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5378a48a-01ae-468c-85a3-f97be5d7ab30/chapter_17_the_west_exploiting_an_empire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feddd998-aaa7-425e-88cd-a48c562db7a1/clash_of_clans_generator._hostingas._in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28963b31-4fbf-434c-a4ce-65ce0cdce034/25392302696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e23cb8dc-54e4-4324-9025-923a5aca4cbb/86208547495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deb74eec-eb6c-4acc-8b90-90143a2972ad/dash_outcome_measure_questionnaire.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/kesuxevapolok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6799/7849/files/46629122657.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_off0000499c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x499C 5412 bytes
SHA-256: a38ef4a80e19a071774016443f46035ed253a33ac1f9ed49c8bfb1312e523f97
font_01_sfnt_off00005c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C05 10080 bytes
SHA-256: d4ab8a100e407137cf0e47e9200dbbbdd051a775133acdc9558b126f773e7b7a