Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b70a0df2332377c…

MALICIOUS

PDF

47.1 KB Created: 2020-08-22 10:51:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 218a17511b08ff6fbbe737a4574ad5cc SHA-1: ed6136c0324bb7ba93f20946d3f04bea502fbd6a SHA-256: 5b70a0df2332377cb1494a5487b573c9387bf79b36ac5464a37adcfe825a28d9
194 Risk Score

Malware Insights

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

This PDF document contains a link farm and redirects to malicious infrastructure, specifically 'https://ttraff.ru/pify?keyword=cheat+droid+pro+apk++free+root', which is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other benign-looking Shopify links, suggesting a phishing or scam lure. The ML classifier strongly flagged this PDF as malicious.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=cheat+droid+pro+apk++free+root In PDF document text
    • http://files.westcoastminitruckers.com/uploads/1/3/0/7/130775537/2096428.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/pme_event_wakeup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/49871775291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/23204418200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/misax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4459/1000/files/liduwotifudubijifudamokez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/22495293252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4840/files/how_to_collapse_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/32365427545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5526/6457/files/simplifying_algebraic_expressions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/biwovavufefibosakenokedi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F4 4888 bytes
SHA-256: ab88071d1821b274a00129b26a46c90a5bd819d8f4ec7cd758a0f0ea3c8d7796
font_01_sfnt_off0000768e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768E 10344 bytes
SHA-256: 40ca93fbbd8fce01837d994ae23191df2122f9cc1a14d8c85581cf7682d33c8c
font_02_sfnt_off00009a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A21 16264 bytes
SHA-256: b7f82d2f7553557e0e94bae4fbbfa034f866ab56970e2f6ca5ebdbc13b4b5e5e

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