Malicious PDF — malware analysis report

Static analysis result for SHA-256 b215cb666ebfcac2…

MALICIOUS

PDF

42.8 KB Created: 2020-08-20 10:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10799cd44ceaa4185883b57e1f6c9b05 SHA-1: 3cc273ef70834ef7e1ae43a5ef1231837028d5a7 SHA-256: b215cb666ebfcac2f5a4971039abe48f4e54df243e5a3b6a5dff36a5a22e27e2
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=adda52+pro+apk'. Additionally, the document body contains numerous embedded URLs, many of which are part of a link farm hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=adda52+pro+apk In PDF document text
    • http://nubonubi.plate-deals.com/uploads/1/3/2/6/132680813/gokuvelojuralob-zujuwudot-xasogebavule-xumawunofeziz.pdfIn PDF document text
    • http://gipew.youthultimateprogram.org/uploads/1/3/0/7/130775583/wowarefevadufet.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/1/0429/0707/4723/files/mendelssohn_song_without_words_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/xepilifitil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/gilatutanib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/37818106667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/college_physics_3rd_edition_knight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4475/5866/files/fuxuguwijujigugibutep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/story_of_an_hour_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6640/9638/files/91887816927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1567/3752/files/96898340181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/posodufalolipativavijed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/gotakogavuxagagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4147/8040/files/3141184116.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EA 5052 bytes
SHA-256: 1836809895470e02c67998a2f2d675cfb947d27e7fa27b0911d9d6c8dff6f48f
font_01_sfnt_off00007a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A31 10616 bytes
SHA-256: 7ca88c21051af6b3545ad167e64251977ad79190776531c711dfc235b08813aa

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