Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d319ef2f864ee9e…

MALICIOUS

PDF

33.3 KB Created: 2020-08-13 15:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7b46fea9b4fd3eef7847bd3b5fb5d30 SHA-1: e9824e2dfcc16ba80723e7b0dd1ddc56507aa058 SHA-256: 1d319ef2f864ee9e304c25b17edb18fe7dd2c29ef8d4d68de3a885e94c1f37bf
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 'https://ttraff.com/pify?keyword=pagsasanay+sa+pagbasa+ng+abakada+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF. 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=pagsasanay+sa+pagbasa+ng+abakada+pdf In PDF document text
    • http://files.maltafpd.com/uploads/1/3/1/4/131437775/rebunojuvolodazuzes.pdfIn PDF document text
    • http://files.clintweiler.com/uploads/1/3/2/3/132303378/d480ba.pdfIn PDF document text
    • http://files.bayrocksurfaces.com/uploads/1/3/2/3/132303382/b1a6e96.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/1/0431/9959/4656/files/15154447069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4292/9821/files/88904020448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/mifunume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/95821550529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4895/9142/files/8262907364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/the_physical_world_continents_and_oceans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5911/files/beginners_guide_to_constructing_the_universe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47948794002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2036/9576/files/entrepreneurship_development_and_youth_empowerment_in_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/85834050599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/83558823651.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_off000044b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44B6 5388 bytes
SHA-256: a86c0a0510475d0588762d511bf0be4611b38310ec179701a0a323af8655bf6a
font_01_sfnt_off00005722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5722 9780 bytes
SHA-256: 950fa7da8d97d9bccc2fb920dc23539a0eaffd5e4ab907b82c91ee87bc071b90

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