Malicious PDF — malware analysis report

Static analysis result for SHA-256 708d1ab0606a312e…

MALICIOUS

PDF

47.4 KB Created: 2020-08-07 05:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62f8902b4c2494a2af9b1aff2c9133be SHA-1: 4cbc07fcf586a73f5f3c07e78fbd28edb6fb94b8 SHA-256: 708d1ab0606a312e41575187605b3b7d9d3a6f9950ac6fd8882938b263b08553
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one that redirects through a known malicious redirector (`ttraff.cc`) to a page offering a 'calculus early transcendentals 7th edition solutions manual'. This suggests a phishing or scam attempt, leveraging a seemingly legitimate document lure. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to drive traffic to potentially malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the heuristic firings strongly indicate malicious redirection.

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=calculus+early+transcendentals+7th+edition+solutions+manual+pdf+download In PDF document text
    • http://files.centre5pinbowl.ca/uploads/1/3/1/4/131453198/4847870.pdfIn PDF document text
    • http://files.inspireauthenticity.net/uploads/1/3/1/0/131070895/givivova-wizetiri-kavegotak-larubafoju.pdfIn PDF document text
    • http://files.kimwilderanderson.com/uploads/1/3/1/4/131407855/7123954.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/1/0428/8184/3356/files/91850637962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/mazemuxanezirowekopidem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/fitoponutokebavofilawal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/vogegelor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/jaxunaxujadetivaket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5827/0101/files/project_on_symmetry_in_maths_for_class_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/fezilis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/98807716129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/32522571213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/pevetinafevozizupubox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/44317623651.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_off0000620d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 5576 bytes
SHA-256: e56f7e5a9cba85807a5486b2c66b906803a50d0f80b24531ac4101b16f9ba4a9
font_01_sfnt_off000074e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E9 2116 bytes
SHA-256: 33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
font_02_sfnt_off00007eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB3 15156 bytes
SHA-256: 7760a03dab1e09a0e942925c1eef3edb956e03eaa7ee5776dffcf5f9e8a98b12

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