Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3050bb5dfdc7f7…

MALICIOUS

PDF

57.5 KB Created: 2020-08-07 09:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abbe3e22599dffa8a3556daf3e6b1dfb SHA-1: 7e3f07e5b2c598d3f1a558a4cad86550203ba3de SHA-256: cb3050bb5dfdc7f70c8e7ebd11fa4ac48358fe210185d3c31488bb3c4aa296f3
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to a URL designed to trick users into downloading further content. The document body, though heavily obfuscated, contains text related to a calisthenics routine and includes the malicious URL. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious payload.

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=rutina+completa+de+calistenia+pdf In PDF document text
    • http://files.littlelanedaycare.com/uploads/1/3/0/8/130814605/3989805.pdfIn PDF document text
    • http://files.alpenglowyarn.com/uploads/1/3/0/7/130738917/xobobaxipena.pdfIn PDF document text
    • http://linenazuz.norfolkaggieparentnetwork.org/uploads/1/3/0/8/130874493/nisajawabefava_puwuwu.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/1/0430/1648/7065/files/fuluxaxafiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/35252652248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3415/6967/files/64562174444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/xiritavimudufujipuvileme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8607/files/82324259114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/boxedufezokobivoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/56911049558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/12560632601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6695/7722/files/gotutefebimovatob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/46157616628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0971/2033/files/how_to_mirror_an_object_in_maya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/karudijikozedenepodil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/51254951315.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8999 5212 bytes
SHA-256: 8208a34b915cabab8f297afb801dc546fac9ce775177c8c495749782807320fb
font_01_sfnt_off00009b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4F 11616 bytes
SHA-256: e604af97b57c9e4c07d1581af1e22ecd6c01191aeed4d100d51a280319ddb5eb
font_02_sfnt_off0000c144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC144 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660