Malicious PDF — malware analysis report

Static analysis result for SHA-256 e748898283e75833…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 17:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08fdde40277cf6f19ef79982d6ef4c32 SHA-1: 91abe6d311d5ae2225fd9a2051e6adeb2ed8ec4b SHA-256: e748898283e75833905faab447be60505341b68f0661492f13a3af46ccc14614
152 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and heuristics indicating malicious redirector links and a link farm. The document body contains numerous embedded URLs, including a suspicious one pointing to 'ttraff.com', which is known for malicious redirection. The presence of many external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content.

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=anniversary+by+tony+toni+tone
    • http://bederovi.fireantfestival.com/uploads/1/3/0/8/130814855/9659798.pdf
    • http://files.ikkarpublishing.com/uploads/1/3/0/7/130740524/dofepipufoba.pdf
    • http://wazasum.outsidethebox.nz/uploads/1/3/2/3/132302780/aef506c0.pdf
    • http://files.mlmattax.com/uploads/1/3/2/7/132741225/jejagukilujopew-selozim-pozululuzufu.pdf
    • http://files.restoreministries.org/uploads/1/3/0/7/130740462/376004.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.pdf
    • https://cdn.shopify.com/s/files/1/0443/6243/2668/files/periodic_table_with_energy_levels.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/filuxopezuwuro.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9066/files/thinkorswim_custom_studies.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/jixekufufoxebigifukizara.pdf
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/date_format_mysql.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/vazuvepovinipixafawide.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/dikiwajale.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/99137512933.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/weekly_planner_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/97639500029.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_off00006314.bin
4570aaaae4dd72d0052ce59b0ca0cebccef88412ff4f3972404df21ef6b0aa33
pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 4940 bytes
font_01_sfnt_off000073f1.bin
d4e972132b9fd084f3ed4e85c2ac8cc2ed521cda66614eddf689c8d795bccd5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x73F1 10400 bytes