Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c1a7d082755d57…

MALICIOUS

PDF

40.6 KB Created: 2020-08-12 22:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdeed4a3eb90a823d58b93059c339ff7 SHA-1: a88c1e12fb41f6debe52f4381160f9c5f951a9d6 SHA-256: 68c1a7d082755d573523d8229f9d837fbeb57fb31dc3f13a01df0a36543c57f3
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with keywords related to Excel VBA and PDF printing. This suggests a phishing or scam attempt to direct users to malicious content. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate malicious intent.

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.com/wb?keyword=excel%20vba%20print%20to%20pdf%20printer
    • http://vomikumes.ericdishongh.com/uploads/1/3/0/7/130739656/befisefofowazula.pdf
    • http://sagef.bluecanoerecords.com/uploads/1/3/1/0/131070872/f9c159ae88c95d.pdf
    • http://jetavul.watchrepaircentral.com/uploads/1/3/1/4/131453645/c8f4c268e267.pdf
    • http://files.mtnmistaussies.com/uploads/1/3/0/8/130813783/9460336.pdf
    • http://files.ridgelinefarm.org/uploads/1/3/1/4/131482819/3101c18.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8542/0949/files/mifurebivosarosivedafeluf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4861/5579/files/54155603234.pdf
    • https://cdn.shopify.com/s/files/1/0437/7398/4919/files/finance_internship_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/51573755684.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2454/files/biology_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/present_simple_vs_present_continuous_exercises_upper_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0434/0904/7708/files/classic_prot_warrior_talents.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/basakugixag.pdf
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/88487174280.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/25681789741.pdf
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/84077441942.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/12443666388.pdf
    • https://cdn.shopify.com/s/files/1/0433/5743/8101/files/an_aid_to_accountancy_class_12_download.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_off0000604f.bin
6e01089e7c5f8e44e448350f1fea28ed35ab3235cdd4f0affd0ebad8e8c48902		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 5196 bytes
font_01_sfnt_off0000720e.bin
8d6c9b67ef84e6901b1bddf5eb2c37cb3618ace85b0145d1fb4b3b316f47843c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720E 10376 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.