Malicious PDF — malware analysis report

Static analysis result for SHA-256 0893a9ee4817eb20…

MALICIOUS

PDF

45.2 KB Created: 2020-08-31 02:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49cb883e0eb9b20b3c21c7a1d24037f2 SHA-1: 25ac9f4f839d23d8781dabf47daf7dd3cdbb3c17 SHA-256: 0893a9ee4817eb20ffd147ed6f9b31f96015a4fe2fa6422867099cef2e072581
154 Risk Score

Malware Insights

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

The PDF contains a link to 'ttraff.com' which is flagged as a malicious redirector, likely leading to a phishing or scam page. The document body text, though heavily garbled, contains the phrase 'Driver mechanic badge', suggesting a pretext for the malicious link. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm or redirection strategy. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

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/wix?keyword=driver+mechanic+badge
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/wexiwafozirikikitalig.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/nojafafuguda.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/39911321824.pdf
    • https://static.usrfiles.com/ugd/b8c837_b54901a16fa140ae866ad1d87633440b.pdf
    • https://static.usrfiles.com/ugd/89363e_916285abfb4f48d582132cffdd1bd44d.pdf
    • https://static.usrfiles.com/ugd/b4609a_28252c1e99234315a7ca3407b18772b2.pdf
    • https://static.usrfiles.com/ugd/a44510_d0d18eda081047c8b50c5cbdf438c09f.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/logopazunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/bauer_verticus_5_compressor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/nodowakiwinobidebajeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/95059779127.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4137/files/41030592014.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_off0000743e.bin
66bb842ae4f714412c698f762c046d7ba58ddee958b5501cde4db2637016c2f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x743E 5340 bytes
font_01_sfnt_off00008647.bin
d1ab2abd7fc46643fe9e1fd5ef28d38e2e3b29842ad539e52105a55b496ac2a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8647 10184 bytes