Malicious PDF — malware analysis report

Static analysis result for SHA-256 222d188d6716c894…

MALICIOUS

PDF

40.6 KB Created: 2020-08-18 16:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebf08fe695a8b77a28bc8c337cebf593 SHA-1: 718b60e62e461b5f1c721bdf5147368bb64c1a17 SHA-256: 222d188d6716c8945f0446bfe6941a9e1d37b29e06218bebaa68e064a435b28a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ielts+fever+listening+test+17+answers'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, which is characteristic of SEO link farm abuse. The ML classifier also strongly indicated maliciousness.

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=ielts+fever+listening+test+17+answers In PDF document text
    • http://files.theguerrillarep.com/uploads/1/3/1/3/131379266/323810.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/food_adulteration_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/tigadititup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4183/2615/files/tinkle_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/vatewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0489/files/51381444282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3948/2275/files/wizards_unite_apk_4pda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9767/files/metibadanotisel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/pignose_hog_30_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0742/2109/files/85099450774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/26896084894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/benefits_of_social_media_on_mental_health.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6774/files/45958970590.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

Related samples 1

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_off00005564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5564 4832 bytes
SHA-256: 39454ea4253a67ad97f1e0ffee025266fe8578824d1c61a0f690d3a7f38694b9
font_01_sfnt_off000065f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F2 9824 bytes
SHA-256: 53e3772398b028649e399fb3a70616d3f7a27111b9b2195a315718edb246970a
font_02_sfnt_off00008794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8794 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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