Malicious PDF — malware analysis report

Static analysis result for SHA-256 007229826884ec48…

MALICIOUS

PDF

46.1 KB Created: 2020-10-15 16:19:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4eb539cc0d7ab12c002ab3f37ebfcfae SHA-1: f74324c8c15ff1bed0f7bb95fff8ca460c66cb68 SHA-256: 007229826884ec484e3ddb59435c86ee108cbc7b1e796c434deb635e7253f85d
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, directing users to numerous external websites, including a known malicious redirector. The embedded URLs suggest a phishing or SEO poisoning attack, aiming to drive traffic to potentially harmful content. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious redirector and link farm.

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://ggtraff.ru/123?keyword=schlage+electronic+touchscreen+deadbolt+manual In PDF document text
    • https://site-1041682.mozfiles.com/files/1041682/xutanolamivat.pdfIn PDF document text
    • https://site-1039633.mozfiles.com/files/1039633/jefeziwegezutozamuridavi.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/74733470148.pdfIn PDF document text
    • https://site-1042448.mozfiles.com/files/1042448/piriwidobe.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/2697538.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/bamow-nepuzasadumof-momexixabudomef.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/405102.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/velukuziralijomem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f8734a933eca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f8704c714d51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f874956e0dfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f87a9f3d959e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f87eceea5791.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/657d94f1-0dc8-458c-bb1a-9242d0714fe5/99043621920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e690ce6-25bb-4599-bc2c-349fb39528c1/zonuvopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe6cf2f8-6d60-40fc-bb1f-a5a8e0d1980c/goniwewanot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3995b967-c311-478e-8a51-ef0464317843/12125714686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e42cddf0-9553-4ff7-a5b8-7b570be20386/pedimewulit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/4069464506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/88001954387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1252/9587/files/gumoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/9620/4442/files/79171664413.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_off00007588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7588 5596 bytes
SHA-256: d4da2f8976622073fcac0e8188fc8479beb32a4487c8b0c5dbc6b3ec6e697764
font_01_sfnt_off0000884f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884F 10184 bytes
SHA-256: 129b4656f95a8ff34180d8363a9ac3867b5a71fa88406e869f127743f876a5ba