Malicious PDF — malware analysis report

Static analysis result for SHA-256 03680434f83cd0a6…

MALICIOUS

PDF

50.8 KB Created: 2020-08-31 21:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98286e4a9df19a7ef8f3812adb9bdb40 SHA-1: 37df491d53ae3d32bbf0ff8a02d7197c7e012aaa SHA-256: 03680434f83cd0a628a278290d7adc23531a69c4e04a3935517f00ff37cbb9ea
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=bhaktha+prahlada+tamil+movie+free', which is a critical finding. Additionally, it hosts a large number of external PDF links, many of which are benign but serve to obscure the malicious intent. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious activity. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=bhaktha+prahlada+tamil+movie+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0434/9529/3094/files/dmarc_report_analyzer_linux.pdf
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/business_plan_modello.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3883/files/kinafaneziteserolupefijo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0409/2828/files/52812637942.pdf
    • https://cdn.shopify.com/s/files/1/0434/7795/8816/files/jamujovetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/vujogojukozapolisut.pdf
    • https://cdn.shopify.com/s/files/1/0434/4633/7693/files/macroeconomics_and_microeconomics_ultimate_review_packet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/magnetic_sheet_metal_brake_bb-_4816m.pdf
    • https://cdn.shopify.com/s/files/1/0434/5613/5334/files/arthurian_literature_in_the_middle_ages.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6265/files/xesilufivodo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0109/3030/files/7549974727.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/42877911434.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005421.bin
f34d9b92fb7b74f6ff84dd0570a3b9369150263f22d8b69637ea9ad4708f2d99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5421 5276 bytes
font_01_sfnt_off000065ed.bin
c03a80e09cd2314fda88e40d8dfb2a6f9691706940fe690bf60e358285cdc90c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 4416 bytes
font_02_sfnt_off00007470.bin
a3630938949ecbd0cdb177172c9f26131dc51b44197b7a66432f4f219b033b19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7470 2600 bytes
font_03_sfnt_off00007f9b.bin
f7953565313e37c5e34ab81937a1c22124d3c652a59c39b3727dd75ca4c7ee65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9B 3100 bytes
font_04_sfnt_off00008c9f.bin
6cff9257d9db28abb59ccd06a5b55998b8d3a3dce2a648a1fd8648dda0b12728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9F 10368 bytes
font_05_sfnt_off0000b061.bin
d7da3dfb9b4be9fcb9d6a14774f45a2ba1630bd6f53fa24ace6f0bfce1d081c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB061 3200 bytes

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