Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3466aa1e706dc4…

MALICIOUS

PDF

36.6 KB Created: 2020-08-22 02:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a8bae7ecb6b6da2e91f5d4d6ce69c31 SHA-1: 92ec73345917dcfd1d6ec176179a2827a1fbecd5 SHA-256: 2c3466aa1e706dc4700d3c3afd88c0c61cb561077fde699ee1941de1c232bbdc
154 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 'https://ttraff.com/pify?keyword=anywhere+but+here+song'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though partially corrupted, contains the redirector URL and references to other PDFs, suggesting a lure to external content. The primary intent appears to be redirecting the user to malicious infrastructure.

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/pify?keyword=anywhere+but+here+song
    • http://files.kellymichellebaker.com/uploads/1/3/0/9/130969800/fc3afe3.pdf
    • http://nibofeni.solitlife.net/uploads/1/3/1/3/131379803/2172033.pdf
    • http://files.ipitombiphotos.com/uploads/1/3/0/7/130739163/towujus.pdf
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/sufogevu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/18859142894.pdf
    • https://cdn.shopify.com/s/files/1/0438/6082/0133/files/jasatavosaxaxafugupox.pdf
    • https://cdn.shopify.com/s/files/1/0435/3985/7563/files/34847553587.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/60497568546.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/78334089847.pdf
    • https://cdn.shopify.com/s/files/1/0431/3359/9893/files/rewiguperimonivowukej.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/minecraft_hour_of_code_level_12_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/6475/4325/files/apache_tomcat_9._0_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/examples_of_alternative_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0431/1505/3213/files/intellectual_property_licence_agreement_template_uk.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_off0000536c.bin
e6d6d4c568799112853ad727e4393efb843b8864de314087c5bd8ce37da34fa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x536C 5028 bytes
font_01_sfnt_off00006494.bin
0d925869f8ab41af862434782de4a5ab3c96ee805493c39e8c374f7793c719a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 9664 bytes