Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b050c3e81324e14…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 23:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d1237d7c8e3eb19497bbc93bb1e9516 SHA-1: 2db6e07710d9e1b1bdc8e91f25e4b1a0d878c102 SHA-256: 2b050c3e81324e14e97694304489a1621c30e1acd318278800ba928459fda9bf
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=physical+therapy+for+frozen+shoulder+exercises+pdf'. This suggests the document is designed to lure users into clicking malicious links, likely leading to further malware downloads or phishing attempts. The presence of numerous Shopify links, while some are benign, contributes to the overall link farm characteristic.

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=physical+therapy+for+frozen+shoulder+exercises+pdf In PDF document text
    • http://files.carstensindustries.com/uploads/1/3/1/3/131379692/1643548.pdfIn PDF document text
    • http://files.jhestekin.com/uploads/1/3/0/8/130813698/9311132.pdfIn PDF document text
    • http://files.longosfinancialmarket.com/uploads/1/3/1/3/131398338/boboku.pdfIn PDF document text
    • http://files.oldmillallentown.com/uploads/1/3/1/0/131071252/6fe58f1f3eea.pdfIn PDF document text
    • http://rinugim.sarasotavirtual.com/uploads/1/3/1/4/131453850/7793447.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/1/0433/0687/7080/files/23313492251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3042/files/fexerad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/85857157622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/jeketeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/era_paleozoica_y_sus_periodos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/rejugusobafomumitiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/la_enfermedad_de_alzheimer_diagnostico_y_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/tofik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/watof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/4541914283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1733/0075/files/helping_linking_and_action_verbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5886/files/zidofinodix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1079/3370/files/66624642492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/4036863675.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6432 5464 bytes
SHA-256: b6a6f1306e4fe39889a1199eaa6bd7fd01577bf3b96fd296fd5aecaf9ddfa36a
font_01_sfnt_off000076db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 9688 bytes
SHA-256: 2543bf91df6605f4e91be820c1e0c9ad12b54d64929c3047944bad89ab8f3399