Malicious PDF — malware analysis report

Static analysis result for SHA-256 69df1a4f4483b5e7…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 20:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 318da98587126e3f9a4c75636bca39ff SHA-1: 49fdf327191286dd54a816de5d0ec35baa10435c SHA-256: 69df1a4f4483b5e78f314be9aff51f474509eb6e0f82f9a34063cd8f6ed0bb0e
154 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which, 'https://ttraff.cc/wix?keyword=service+recognition+award+template', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or redirection attempt disguised as an award template. The presence of multiple external PDF links, many pointing to benign Shopify domains, indicates a link farm strategy, likely to obscure the malicious destination.

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/wix?keyword=service+recognition+award+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0459/3241/3095/files/fundamentals_of_machine_learning_for_predictive_data_analytics_algorithms_worked_examples_and_case.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/33366507938.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/las_constituciones_del_peru_domingo_garcia_belaunde.pdf
    • https://static.usrfiles.com/ugd/d01287_8d4c6fd732c34181ad3662350d368054.pdf
    • https://static.usrfiles.com/ugd/ab059d_983feeab3dad44d4926b6477289412bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_841b51e9e56641518f1ee9788556fad4.pdf
    • https://static.usrfiles.com/ugd/b8c837_16d63047691748e19d09bcab43da2467.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/favubedezemopazejive.pdf
    • https://cdn.shopify.com/s/files/1/0434/4171/7414/files/bajaj_pulsar_150_neon_spare_parts_price_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdf
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/30264874685.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/xoxeke.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/dosevoregexuli.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_off00006a5b.bin
ea014aeb122262b104de155cca680093d45eba60b8478274f7f6ffc4bb1ff3ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5B 5472 bytes
font_01_sfnt_off00007cf2.bin
879fbd96493cb99b0b25e4f6d25d82e9c076340683760d9ca0f585b2b6e6f915
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF2 9884 bytes