Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f378de9e4714281…

MALICIOUS

PDF

47.2 KB Created: 2020-08-14 01:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de248510e6a3f4acefaed23f8bdbc5d0 SHA-1: ebd00faeac1aa5fd50d081d21dce9b4f9e6cd810 SHA-256: 2f378de9e471428177a2a311ccfac646d42f2b251cdff08462d580ae7fed2b7d
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination and potentially evade detection. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to movie songs. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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.cc/pify?keyword=kaththi+movie+songs+masstamilan
    • http://files.dharmendhaliah.com/uploads/1/3/1/1/131163976/supupigij.pdf
    • http://files.peppertreegoldendoodles.com/uploads/1/3/0/7/130776220/nizadofiwefelafuj.pdf
    • http://files.ryancoletd.com/uploads/1/3/1/4/131453610/legakemajavomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1311/0951/files/52386391906.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/tamesexoxetomaxunasozawo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/90015504626.pdf
    • https://cdn.shopify.com/s/files/1/0435/6685/8408/files/61671868003.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0854/files/bunapemevavorelobenobigo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/pikuxilamutumijenex.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/74670238769.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8837/files/21278679571.pdf
    • https://cdn.shopify.com/s/files/1/0432/4392/9757/files/lusev.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/mibezinukepikiti.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/punto_de_fusion_de_la_acetanilida.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_off00006614.bin
9f8caeea096724f51ef05755e5991897fda62bcd465dcc62bd1ddeed931ae57b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6614 5032 bytes
font_01_sfnt_off00007722.bin
b89c6ab797472fe9ff15336a70d88e5c1ecb295dea805a5e52ca8ab5db0bd773
pdf-font-stream PDF embedded font (sfnt) at offset 0x7722 10352 bytes
font_02_sfnt_off00009ac7.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC7 16164 bytes