Malicious PDF — malware analysis report

Static analysis result for SHA-256 4985f4f60f511e6c…

MALICIOUS

PDF

48.7 KB Created: 2020-08-31 04:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76b87dc29c0cb33e63edcdbe26df469f SHA-1: be181e066f2c0c643c9314a647007d125b553144 SHA-256: 4985f4f60f511e6cc8bdb78ae6b635fc0ddb0bbbb8e022f4793f21f5434dc45e
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=material+science+callister+pdf+free+download'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to shopify.com domains, suggesting an attempt to obscure the true malicious destination or to appear as a legitimate content aggregator. The presence of a visual download button lure further supports the malicious intent of directing users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=material+science+callister+pdf+free+download In 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/1/0432/8023/6702/files/minnesota_multiphasic_personality_inventory_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/71434355495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/verazebuwipesogizel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/95293565985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3243/7151/files/vekonimadetezabedexakug.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7f46b5_a9d9835f039f4029bd87ab5adda67453.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/33a2e4_e6f9120870264fb7a035b8516f6d735a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/kubugigokedero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2083/7287/files/ditobujetijopepazikepud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6449/9105/files/zogizos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7875/files/nodexafawoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/68777818655.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACD 5244 bytes
SHA-256: 33912b63e9b0371b1929a6471241258e25b7e5bc72c40e3abc17796a9777ffa8
font_01_sfnt_off00007cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBB 2116 bytes
SHA-256: 49f1c345582212729590e0456707ca92d3838aef8cba26fbcaa28f8c5b0a0640
font_02_sfnt_off00008686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8686 15208 bytes
SHA-256: 059bee1b424c53b4bfc41fc7ae96150f89f92689d31f7694afd14f4889418f89

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