Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4499a98742ffb3c…

MALICIOUS

PDF

36.4 KB Created: 2020-09-20 14:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bdc0c13a48acb19dd04c772ddc4235e SHA-1: ac1faec09ba633a7f936f299dcf1baa0ee324534 SHA-256: f4499a98742ffb3c5f6bee86dbd8094c6f39d14c74b8f0f834967cdcc4b08cd6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that a link within the document redirects to known malicious infrastructure at 'https://ttraff.me/wix'. The document body itself contains text that appears to be a lure for owner's manuals, suggesting a social engineering tactic to entice users to click the malicious link. 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.me/wix?keyword=bissell+proheat+2x+revolution+pet+owners+manual
    • https://cdn.shopify.com/s/files/1/0433/6045/2760/files/75642502981.pdf
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/delijebuvif.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/aws_elastic_beanstalk_tutorial.pdf
    • https://ecfee5c4-765e-4ba2-b283-c5363d36e64c.filesusr.com/ugd/89363e_1631958287e4496283be920ed5186a59.pdf?index=true
    • https://3262d66c-03fa-42f8-879e-5de1ed906d30.filesusr.com/ugd/a4ea6c_45fe23a5c25e41e6a38950e1a755df3b.pdf?index=true
    • https://eff2aef4-55e9-4624-9c29-9ffd5cc75678.filesusr.com/ugd/8508de_c9260007da224d56b09bf4752523c59a.pdf?index=true
    • https://9d68a880-b6c7-45b6-bdec-72e976404dd0.filesusr.com/ugd/43d598_8e49ffb1e64a4ec2a3062c724d7863a0.pdf?index=true
    • https://5b7cd3df-ae96-4bd2-b8c7-3f4d18e1a3d7.filesusr.com/ugd/9904c2_4a48998a0e044a3d877f47f13e8ce461.pdf?index=true
    • https://2e1f4d7f-938c-46a0-b01d-158275ae5c5a.filesusr.com/ugd/12745a_e0aa4d41310b42278e8aee00dfd72274.pdf?index=true
    • https://4873e7a3-f78a-456a-8a90-125e472920e7.filesusr.com/ugd/e1d12c_e43c9ab957f741cf8fbad950d4afd14d.pdf?index=true
    • https://2d66a17d-4fc7-4754-b5b0-42470975c1b0.filesusr.com/ugd/fbccce_9b04e4a1142a4a1b8934d77bfea74043.pdf?index=true
    • 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_off00004cbe.bin
b1651478f39f725043eac3797ac24f1d8364384b10b67a0ab52e3c69338225cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CBE 5460 bytes
font_01_sfnt_off00005f3c.bin
3292c583828025f06071f9471c25f2269b2443e6ebc2de1b7b0f9797d9f9d94e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 10480 bytes