Malicious PDF — malware analysis report

Static analysis result for SHA-256 d497818af1eed919…

MALICIOUS

PDF

42.8 KB Created: 2020-08-06 12:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aeaeda9c7f61c455e21e92514e80e518 SHA-1: a947ef8f8e48c5541333719ce446996fb72753ab SHA-256: d497818af1eed91901d56bd9d2e212adadec7a420a24dc8367a2e6a052f0e69d
194 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 'ttraff.com'. This URL is presented within the document body, disguised as a 'bank po syllabus 2020 pdf', indicating a phishing or social engineering lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=bank+po+syllabus+2020+pdf In PDF document text
    • http://files.morroandjasp.com/uploads/1/3/0/9/130969375/wojerodijudo.pdfIn PDF document text
    • http://files.km4kate.com/uploads/1/3/0/7/130775249/5707b3ac388e.pdfIn PDF document text
    • http://files.porkrollpalooza.org/uploads/1/3/1/3/131398100/zomir_ravedowikewen_ridokevogebe.pdfIn PDF document text
    • http://files.printmedia.nl/uploads/1/3/1/6/131606798/diwogizometeweteru.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/1/0430/7927/0561/files/82859534355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5178/6145/files/vepavamevufobegariz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/96751397224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7549/4300/files/html_to._net_core.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/zekaxetufomuguwositenuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujufizolotedugogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7320/files/62781330672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8435/6507/files/vawunewofositajivejogore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/64522767728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/50070374890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/21107184769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/length_of_string_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7934/1982/files/kupibekakosuj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C0 5568 bytes
SHA-256: baeb554ba42b7f7e684c37653e32ed01c16254e2331f50dfd5ec5e03991fb14a
font_01_sfnt_off00007cce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCE 9968 bytes
SHA-256: 39afddbe62a911de014ce449e205a92a44675ea4bfa297b27c8c7b361d404887

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