Malicious PDF — malware analysis report

Static analysis result for SHA-256 742dae2c666fb940…

MALICIOUS

PDF

52.0 KB Created: 2020-08-16 22:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80e3e561319ea842da0975bb4eafdfbc SHA-1: 25ae7293a622b34785a6437d0233ab2cb2a61174 SHA-256: 742dae2c666fb940f5249079274bf8f344e73d7b00e7086fa047ae82f7fd4b57
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://ttraff.ru/pify?keyword=vector+canape+demo'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, some of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of malicious URLs indicates an attempt to lure the user to a harmful site.

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.ru/pify?keyword=vector+canape+demo
    • http://files.allamericandogexpo.com/uploads/1/3/0/7/130738748/jovopowogumu_tetudepukiko_zorigexak_ruxedapopuju.pdf
    • http://files.kelseymedeiros.com/uploads/1/3/2/6/132682676/198ed651381.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/wikiriminekosefupavejer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8542/files/using_if_statements_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/biochemistry_questions_bank.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/24414581410.pdf
    • https://cdn.shopify.com/s/files/1/0432/5428/4450/files/83125647660.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/gotec_leak_detection_spray_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0446/7376/1433/files/cooking_with_herbs_and_spices.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/seliralalus.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/dezig.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/19266991965.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000856b.bin
e1b2c75cc24464a827c028abbca8e4790a8454445093e318cd7c0936740cc2e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x856B 4976 bytes
font_01_sfnt_off00009638.bin
f40d638a246de3284ada2884a4e1ebf369ab60dc639c4fe538ad2eea82dcacd1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9638 14560 bytes