Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e702babb63fab7a…

MALICIOUS

PDF

47.8 KB Created: 2020-08-29 22:26:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9979299b50255037bc8504e5409cf47 SHA-1: 28d567d20f414bd65d2998e0e4b3df28e7cd7db2 SHA-256: 3e702babb63fab7abe4e045c42a82bef4ac5637286329cc6b982d7741c9f811f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged as malicious by an ML classifier and contains a link farm of 15 external PDF links. One of these links, https://ttraff.cc/wix?keyword=onyxia+attunement+guide, points to known malicious redirector infrastructure. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its specific lure, but the presence of the malicious redirector strongly suggests a phishing or malware delivery attempt.

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=onyxia+attunement+guide
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/dasujasirebekupofizoride.pdf
    • https://cdn.shopify.com/s/files/1/0432/7617/3472/files/vimilufikoferuveni.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/atm_card_block_application_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/43696482873.pdf
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/97318389780.pdf
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/the_beatles_guitar_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/3760/5544/files/can_t_stop_singing_covenant_worship_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/zuzonu.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca90cdc4ee4248cb9a02fae74eff77a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_34ba526493014eeca1fba63be6c826a7.pdf
    • https://static.usrfiles.com/ugd/de60da_372f87888dc54dfd88201c2b01929e99.pdf
    • https://static.usrfiles.com/ugd/12f4eb_52ab23438eb145e8a463457d417ffe1b.pdf
    • https://static.usrfiles.com/ugd/36f25b_dc786eac36b54e0496ea5cae235fc667.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a70e473ec2e4c9f988ece322f06285d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1fac94d232c474b8aa36e3b150783ab.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f2e.bin
4a107354d565cda14b6a1e0c594f9f461905833bdc8fc6267c1d33fa8dea321b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2E 5036 bytes
font_01_sfnt_off0000904c.bin
a15e7f0118eb7e2facbd29267acb1367be46cd5cd7581b3b68a9ac5561b79bc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x904C 9956 bytes