Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf6be0a1c292bb8…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 17:34:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5308a07c4483a27290423f84225c5526 SHA-1: 487fc327d3b8acb1ac6edcc450adc979025dba3f SHA-256: bcf6be0a1c292bb8a06f21e88cfcb6eb183bdc18dac3644031fbd14a80b47a44
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.com/pify?keyword=apology+for+poetry+sidney+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to these URLs, suggesting the primary purpose is to drive traffic to malicious infrastructure through a link farm strategy.

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.com/pify?keyword=apology+for+poetry+sidney+pdf In PDF document text
    • http://kunexato.claudiafreepoint.com/uploads/1/3/1/4/131437812/ronerinemosinu.pdfIn PDF document text
    • http://welimupa.birdsontheniagara.org/uploads/1/3/0/7/130775971/be3f1.pdfIn PDF document text
    • http://files.cometsathleticboosters.com/uploads/1/3/1/4/131453633/49d912698eb3e.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/1/0430/6288/6551/files/96777508892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3412/3160/files/23414413417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/karmakhali_bengali_news_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6280/3097/files/muxaberizerik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54729765263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/88373162169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/1637186841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1586/3447/files/jefogebozibunawuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/list_of_all_spices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5477/4949/files/breakthrough_plus_1_teacher_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5816/3865/files/animal_anatomy_and_physiology_questions_and_answers.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 3

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_off00007468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7468 5092 bytes
SHA-256: a0f407f215f8a35658c5ca3ea07a4a3fd6e0a1e08d121e54e1c8356b9d1643a0
font_01_sfnt_off000085de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DE 10076 bytes
SHA-256: d988475ab006120aceb1e1f0091f69a4e13ada2cd784d6f6c6b42125e3f6a8e0

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