Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3fe5513654b8d65…

MALICIOUS

PDF

47.0 KB Created: 2020-08-15 20:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc1a366dc9bfbbeba29de2f6b868e228 SHA-1: e1087bde6d1229bcbff867c8dd44dcf6df19aab1 SHA-256: e3fe5513654b8d65354cd3feca71eb081572f328ec106bcd859183fe8334f72b
152 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified it as a PDF redirector link, pointing to 'ttraff.com', which is known malicious infrastructure. Another critical heuristic identified it as a PDF link farm, with 30 external PDF links, many hosted on 'cdn.shopify.com'. The document body contains garbled text but includes the suspicious URL and several Shopify URLs, suggesting a lure to download further content. 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.com/pify?keyword=all+new+odia+movie+video+song
    • http://files.willucaauto.com/uploads/1/3/2/7/132712000/4986962.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/26_brain_gym_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/wafazujojuwokaberubiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/32404713410.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9275/files/isometric_exercise_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/65033896510.pdf
    • https://cdn.shopify.com/s/files/1/0428/2993/8855/files/sutokarisegogajenazuz.pdf
    • https://cdn.shopify.com/s/files/1/0448/7512/0807/files/anti_aliasing_in_computer_graphics.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/fiwidupivajepunebeso.pdf
    • https://cdn.shopify.com/s/files/1/0434/0413/2508/files/99940532053.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96328102714.pdf
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/solowobo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/terajopidagazitok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0894/1467/files/gesirizegepogaxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/88121251071.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000554d.bin
3e6b46de9a4c2f0cee514f5ddbaeeb4e3fc840261b30786359ae3e99d340b00d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554D 4896 bytes
font_01_sfnt_off000065ea.bin
506a63c42abaf4c84f3a19b451107f4061da90eef46cdca9c22ac1da10783c4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 10652 bytes
font_02_sfnt_off00008a9b.bin
93c82dc4ca1803203f725e939f3a65da474170f4d5cd5ae990b7adc300ccdb79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9B 16392 bytes
font_03_sfnt_off0000a078.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA078 4324 bytes

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