Malicious PDF — malware analysis report

Static analysis result for SHA-256 3378b9a9a8fb36e6…

MALICIOUS

PDF

154.5 KB Created: 2020-09-05 23:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d81140a998125f84e213e891e77c57c8 SHA-1: c2f67d0fa6e5848f7d0a2292cf4aac66b99080ab SHA-256: 3378b9a9a8fb36e6591e8727fc0daff4cfd4e1d052f451ab322bdac5e1621a9f
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is highly indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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=basketball+background+music+free
    • https://static.usrfiles.com/ugd/93971e_7faa3db0c14b4933973d03ad93140859.pdf
    • https://static.usrfiles.com/ugd/0bcf16_909986dbb04d477e94914f91bac6ad35.pdf
    • https://static.usrfiles.com/ugd/c0fca2_b58c42bffad946fc9bb4b28697a00585.pdf
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/57714299815.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/variable_types_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/2979/8818/files/attestation_assedic_assistant_maternelle.pdf
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/files/22172367954.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/velisorovopekibob.pdf
    • https://cdn.shopify.com/s/files/1/0437/5783/0298/files/archmage_xylem_guide_sub_rogue.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/xijafitotif.pdf
    • https://cdn.shopify.com/s/files/1/0462/0179/8809/files/78898484588.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_off00020f77.bin
90579709db6518ef25f05d6fae63229103c6ee904253b33ebaa087f2541b6baa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20F77 5592 bytes
font_01_sfnt_off00022267.bin
cce828d97237ef10bdda873bb6ad37c9e5261d75bf3dd0dea3d4c62133d4e2aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22267 10752 bytes
font_02_sfnt_off00024765.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24765 16092 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.