Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd24a5dbeead7ff…

MALICIOUS

PDF

43.1 KB Created: 2020-08-23 09:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f61a962ae36f065a7009b0db46a520f SHA-1: 73db8040d15d8494861df874c18d0a810d878988 SHA-256: 0fd24a5dbeead7ff5d3b5541f79ee7b2188c371780c40c2f2c294325ad839341
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=chefman+air+fryer+cooking+guide, which is identified as a malicious redirector. The presence of numerous links to PDF files hosted on Shopify suggests an attempt to create a link farm for SEO manipulation or to distribute further malicious content.

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.cc/pify?keyword=chefman+air+fryer+cooking+guide
    • http://files.kundaliniyogamanchester.com/uploads/1/3/1/4/131438353/5723348.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/57495945268.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdf
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/78260874212.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3820/files/53941294720.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/flow_diagram_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/lurodekezufugawuw.pdf
    • https://cdn.shopify.com/s/files/1/0446/0979/8307/files/58121571926.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/collection_in_java_interview_question.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/94244596813.pdf
    • https://cdn.shopify.com/s/files/1/0428/7106/2684/files/51533486229.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/4976379337.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_off00005d80.bin
f76a73354b6b7c7f3131d9caa238e427be119b97c18207cc2255f3d3bb52140e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D80 5216 bytes
font_01_sfnt_off00006f14.bin
5605e21bfe00e718649120487abb9977f02ca400c4faef48c572b0d79a78c5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F14 10116 bytes
font_02_sfnt_off000091c2.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91C2 4324 bytes

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