Malicious PDF — malware analysis report

Static analysis result for SHA-256 9434df12ad4b388f…

MALICIOUS

PDF

46.8 KB Created: 2020-09-01 14:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd71f1193c0d3ac301a3c36fe1fdd9c2 SHA-1: 059b2bbf0f14acc958796183944bafd6281f77be SHA-256: 9434df12ad4b388f86809529f58d9ed7862bff1c5f9ff68a6fe545cdd4152701
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com' with a query for a game hack. This indicates a likely phishing or scam attempt designed to lure users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, suggesting an attempt to blend in with legitimate content while distributing malicious links. No scripts were extracted from this sample.

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=beach+buggy+racing+hack+apk+revdl
    • https://static.usrfiles.com/ugd/b8c837_01fac31c07364ba190484afae6da9376.pdf
    • https://static.usrfiles.com/ugd/b8c837_52b1f7723aae4e51b8b7a0f5db87dec4.pdf
    • https://static.usrfiles.com/ugd/b8c837_54a8aafbb542419fa5888ecb6c672759.pdf
    • https://static.usrfiles.com/ugd/ea2f88_0650249cc2db4834aaf1329f1d2fe8b5.pdf
    • https://cdn.shopify.com/s/files/1/0437/1031/6694/files/arthashastra_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/komaziripedipozuwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/arnold_chiari_1_malformation_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdf
    • https://cdn.shopify.com/s/files/1/0450/3542/1846/files/python_round_to_two_decimal_places.pdf
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/91106061342.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/analyzing_poetry_middle_school_worksheets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e4b.bin
f872b34d77ebc14175fdef6e380dec4bdb3fcaea197a988a002a2530795046e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4B 5572 bytes
font_01_sfnt_off00007148.bin
c3b157cc8e736f935445b0c9f7328d349fda678b72f2a133893ae0ac75fa3a38
pdf-font-stream PDF embedded font (sfnt) at offset 0x7148 10640 bytes
font_02_sfnt_off00009607.bin
356ad53019ca4bc414b487deb1a043a78c7509cd9dbf3e22aecabd2cd9ca06fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x9607 17040 bytes