Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4aee2676bd5e99…

MALICIOUS

PDF

70.4 KB Created: 2020-10-15 00:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 594b1ad2497ac417d5e1199337c0f665 SHA-1: 7f34763c509e0c99235e86a30c72f60907d17b64 SHA-256: 2c4aee2676bd5e995cec833fe8bb3aaa94130ff850538b81f24e5b116cb61622
154 Risk Score

Malware Insights

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

The PDF contains embedded links and document body text that directs users to a malicious URL, disguised as an instruction manual. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the primary URL is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggest an attempt to redirect users to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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.com/pify?keyword=weider+home+gym+instruction+manual In PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/punafejolujediguvev.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7971455.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/53865ff5-1d8a-4fe6-b978-db7f89c205e5/36946170073.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de50b10-8b5f-4f2c-9596-e2a5fc382f1b/4595816405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe9275f0-f56f-4929-a7a8-01385d1e7d4b/lazax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c2db76e-3704-470d-8c8d-4227c3282416/64760208341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1911/files/jefedovijafagaruzuxuvamez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1573/0886/files/convert_excel_to_apache_poi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1086/6851/files/53376931942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5217/8849/files/zixepadaditojadanisokiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5608/6171/files/grand_summoners_tier_list_2019_jp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38dc6319-e56f-43f5-b5e4-bf7a9c635279/pikidit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d0ec9ed-318d-4e99-a7b2-2b7a4cd15574/48486851093.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e7a1713-a79d-4a64-a1f1-335e0ec6526e/99879192113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ae9acaa-7951-44f3-ac6d-998effa048bc/18797263396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00dcea01-12eb-4be5-bd23-c3e46725b859/16503764104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2278/5444/files/smartstandard_6.6_ft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5327/1208/files/finding_perimeter_of_polygons_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/62496021761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4460/4584/files/fun_facts_about_venezuela_culture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7922/8320/files/mevedasenawadamekukugere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4bcf873-9ba0-49e1-a167-9b9212da52d8/vukifawakelon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2baab0a-f0cb-4b18-99bc-b22e8758483f/xupuvuba.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD35 5348 bytes
SHA-256: 8ca1a0aaf7f6d6d50aa333f45da83873165b9e29b424685bf0dfe2bd7f97fe0b
font_01_sfnt_off0000cf49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF49 14448 bytes
SHA-256: 1902a75a7d39397edb41967b1b9a8528420c3ea49595c6f96d286023dd1ea833
font_02_sfnt_off0000fce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176