Malicious PDF — malware analysis report

Static analysis result for SHA-256 184dade8602c0237…

MALICIOUS

PDF

34.7 KB Created: 2020-08-19 16:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b90eacc7d7b0e7b0892d484a70d8ead4 SHA-1: 114ddfa4e4e027376b71003a3928368f21262bfc SHA-256: 184dade8602c02377e44ee0415a59295430b61d53c86053834b51854dc5af657
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.cc/pify?keyword=audit+report+standards+icai'. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. The presence of many Shopify links, some confirmed benign and others unknown, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted, but the overall structure and heuristics point to a social engineering attack.

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 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.cc/pify?keyword=audit+report+standards+icai
    • http://files.staidansolathe.org/uploads/1/3/1/4/131453595/nowexutafumin_xofukobik_zasowupum_kizur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6234/5384/files/reference_letter_doctor_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/2262/2621/files/70859376100.pdf
    • https://cdn.shopify.com/s/files/1/0434/6940/6360/files/number_of_smes_in_nigeria_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/bemomusasupavavuragupunaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/exercices_alphabetisation_pour_adultes.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5916/files/knowing_god_s_will_in_marriage.pdf
    • https://cdn.shopify.com/s/files/1/0433/2971/6374/files/very_hungry_caterpillar_printables.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ba4.bin
7994d4c99193d5a201eeee5e97b9b1c337e836ab2eb6167572bed84052ae62f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA4 5024 bytes
font_01_sfnt_off00005cbf.bin
b4fb75ae819610f7c96b5baf3098de30c62f6db458775b6d4a4266a6f420a77f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBF 9972 bytes