Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd227033c32cf559…

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 14:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe0cf01eaa410e4ff0c534b4428c5b10 SHA-1: 49051b623ca4dfc9686f653eb9c41befd1191fa7 SHA-256: bd227033c32cf559bab5cd9ac3efb9bf82e90376fc3ece8cdddeff256851e9f1
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, specifically `https://ttraff.cc/pify?keyword=acls+algorithms+2015+pdf`. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains hosting other PDFs. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking PDF links, reinforcing the lure. No scripts were extracted, but the presence of a malicious redirector is sufficient to classify this as a malicious document.

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.cc/pify?keyword=acls+algorithms+2015+pdf In PDF document text
    • http://files.mdgracedesigns.com/uploads/1/3/1/4/131454523/mepokod-tizabosinepage-wozilo-gumuvebabemi.pdfIn PDF document text
    • http://zamuzevup.bcox1.com/uploads/1/3/1/8/131871592/mafatobemutam_nalovu_petodaputebeni_rawugatuw.pdfIn PDF document text
    • http://zewidemi.greenjeanssale.com/uploads/1/3/0/7/130738731/ranojokekup.pdfIn PDF document text
    • http://files.uctogo.com/uploads/1/3/0/8/130813701/27d7f.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/1/0431/4837/8280/files/bafiluxugubiwuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/aprendizagem_e_performance_motora_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/95104803095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9991/2344/files/slope_intercept_form_real_world_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/109337596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/pdf_to_word_document_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5774/0967/files/83223042223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/86285711273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/alchemist_board_game_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8784/5790/files/elgato_hd60_pro_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1002/1787/files/jasajawilurojukojora.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_off00005dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFD 6008 bytes
SHA-256: 6271b2cb90bc263191b2fffaa0219328f54ef8e7613c0cc2f262deedaec959d5
font_01_sfnt_off0000724c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 11164 bytes
SHA-256: b0371c3c1ce208b4027408e3e3c67a3ef349d8c6f77df26b39cca6ba827c556e

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