Malicious PDF — malware analysis report

Static analysis result for SHA-256 77545ed5a061410d…

MALICIOUS

PDF

99.0 KB Created: 2020-08-11 22:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d8a8360ce746aa9be8b44d46bdc58ef SHA-1: 8eca17d713f33e7398d1da1ede5a0fcca362cfc8 SHA-256: 77545ed5a061410d3411d532cde6535de4c17145293b5e3b429a430f831783c4
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, contains the same URL, suggesting it's the primary lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic further supports the interpretation of this document as a fraudulent scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=arthashastra+book+in+gujarati+pdf
    • http://files.tedstunner.com/uploads/1/3/0/7/130738836/ruvoxivevu-mezawubit-fenijupotowup.pdf
    • http://lanetud.myentouragemusic.com/uploads/1/3/1/8/131856935/kutofamomos-lekaxakev-divigetamobuzug-pagiwofutot.pdf
    • http://files.stanglphotography.com/uploads/1/3/1/4/131437657/9161632.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/37769007381.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/72109333505.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5085/files/body_shaming_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7649/files/ispita_mary_balogh.pdf
    • https://cdn.shopify.com/s/files/1/0450/9381/4435/files/81571645465.pdf
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/fedaniwupa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4557/files/cerebral_palsy_gait.pdf
    • https://cdn.shopify.com/s/files/1/0439/3736/6174/files/zizofedazitokojijotada.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98908457197.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0608/files/vapitomalawiboneso.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/46538167799.pdf
    • https://cdn.shopify.com/s/files/1/0440/5228/3542/files/surepamunuvejojuxate.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012280.bin
93d16d19a93a1884e703b769713302591529db6b0c3f0389632fbe3f5da90956		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12280 5540 bytes
font_01_sfnt_off00013549.bin
38ca0e522c264f10566fd8f9f5c124bdae5fd36c6204e1bfeee9d4d6bbef3686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13549 3772 bytes
font_02_sfnt_off000140ec.bin
621806fcc2aa572bc87b63a6589b8b9b19c3b1a5caadf5948927f35c82d69d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140EC 10492 bytes
font_03_sfnt_off00016522.bin
e7a6a0ebfb0b1e06de577a8ecf94eda774d177e13469aa571add56722870634b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16522 7028 bytes

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