Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7c6bfa4a4ce230…

MALICIOUS

PDF

58.6 KB Created: 2020-08-18 16:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6196b219a5ccd21c8634ac9a3259b10 SHA-1: 0812640db59f12231a88552ae8590e2047d5ca71 SHA-256: 7c7c6bfa4a4ce230ea0f5119589acb44c5bc6ae9dda63be174c309d141eb4935
162 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'. This URL is presented in the document body as a way to claim documents, suggesting a phishing or scam lure. The PDF also exhibits characteristics of an SEO link farm, with numerous links to Shopify-hosted PDFs, likely for traffic generation or obfuscation. While no scripts were extracted, the presence of a malicious redirector and the document's structure strongly indicate a malicious intent to redirect users to harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=authorization+letter+format+to+claim+documents
    • http://tezevep.falsefloorcreative.com/uploads/1/3/1/4/131437462/palaparewigug.pdf
    • http://files.monikamdesign.net/uploads/1/3/0/9/130969254/4f9c30bd29.pdf
    • http://files.tbikesbekkevoort.be/uploads/1/3/1/6/131637679/859856.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/75227345448.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/lupukifusijisexomibatokij.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/30751017040.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/22848734347.pdf
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/brian_kopps_1_60_alliance_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/chrome_extension_flash_audio.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/badofosawijewipeniwurodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3767/files/blitzscaling_livro.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/c_windows_system32_drivers_etc_hosts.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/vufam.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/32343930101.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0526/files/data_mining_techniques_in_crm_inside_customer_segmentation_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7464/0286/files/gebufelivox.pdf
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/lonely_planet_istanbul.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/15856569302.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ccc.bin
dd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCC 2828 bytes
font_01_sfnt_off0000a6c6.bin
085b0e1b42c9dd3693349cc5dac4675bd7712d4671a74da0715faa32a62a2ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C6 5300 bytes
font_02_sfnt_off0000b8aa.bin
a776dba5edfd584995c0b7ed247417af0af7f0f2aa832b583bebb6e35aaffe04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8AA 9932 bytes

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