Malicious PDF — malware analysis report

Static analysis result for SHA-256 8328a14063067c7e…

MALICIOUS

PDF

43.6 KB Created: 2020-08-10 11:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1562565d99be0bf7439d7864e7348a51 SHA-1: 32b17c0f4d585be29a8229d1fd948099ca86c208 SHA-256: 8328a14063067c7e8bb0087dc9d2505eea048c35021282f4daf02a3349fa6ad9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=writing+technical+documentation+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. 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=writing+technical+documentation+pdf
    • http://files.crps247.com/uploads/1/3/0/7/130776338/jowonevogenexu-vexanib.pdf
    • http://files.taylorhobsonserviceusa.com/uploads/1/3/2/3/132303229/a4f609b3d1346.pdf
    • http://files.mayalissa.com/uploads/1/3/0/7/130739525/gudaruxipanagim_mozog.pdf
    • http://gujedem.toddspianoservice.com/uploads/1/3/1/1/131164250/zovilos-lajebapiro-forewusifiwofa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0108/5082/files/7502453462.pdf
    • https://cdn.shopify.com/s/files/1/0428/9334/4924/files/academic_essay_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/gexupubudalasolutozased.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/wifajeduxubuwexivov.pdf
    • https://cdn.shopify.com/s/files/1/0431/9087/8372/files/biocalculus_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/lizupirewuvij.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/jakuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5682/3453/files/theological_terms.pdf
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/45145406897.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/39412968133.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/70629811143.pdf
    • https://cdn.shopify.com/s/files/1/0437/5982/9149/files/qasida_e_burda.pdf
    • https://cdn.shopify.com/s/files/1/0431/4398/7357/files/wordly_wise_3000_book_6_lesson_4_answer_key.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc6.bin
984bbafdd6b614f614c91e59ee35a1b65f78f5c8cf163e29fc91b35fce193fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC6 5404 bytes
font_01_sfnt_off00007f0e.bin
1ee90f3063ebd406f762094fe512093e067098e92eef4bb6b054b0984c163bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0E 9960 bytes

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