Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b03320161493784…

MALICIOUS

PDF

34.7 KB Created: 2020-08-22 21:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d66ac639289f2781187f93a1508a38c SHA-1: 0fd33a21fbd502531c0989be91b94daf2dc0babd SHA-256: 0b0332016149378465f65699a9860137cde94b63278da3e95be9006d1419adf6
174 Risk Score

Malware Insights

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

The PDF contains a lure related to reporting online to Lancashire police, directing users to a malicious redirector URL. It also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs and a callback lure further supports a phishing or scam attempt.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.ru/pify?keyword=lancashire+police+report+it+online
    • http://files.graphictechgroup.com/uploads/1/3/0/7/130740066/3592396.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/call_recording_app_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woburorofinuxup.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/jaxasowugerexaxafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/chemistry_dictionary_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/nys_thruway_conditions.pdf
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/gutede.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/94952553088.pdf
    • https://cdn.shopify.com/s/files/1/0440/9013/0584/files/vortex_race_3.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/bade_achhe_lagte_hain_shreya_ghoshal.pdf
    • https://cdn.shopify.com/s/files/1/0446/7880/7705/files/massey_ferguson_245.pdf
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/fijonilawijelawonagad.pdf
    • https://cdn.shopify.com/s/files/1/0439/1370/7688/files/57460377940.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_off00004ae8.bin
1521b840f700257dd822cef597498c5d92ef99e138994f9830af69b9d0f50925		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE8 4960 bytes
font_01_sfnt_off00005bb9.bin
3cda4cc73b54d41fa5782a22b6568070e4b74070c57af2ce26e8e07197054c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB9 10108 bytes

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