Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1764700c0c9056d…

MALICIOUS

PDF

40.3 KB Created: 2020-08-08 03:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b39421f5616544678755704173335271 SHA-1: 161297eefe538042949edc73aa4d89609735f9b3 SHA-256: a1764700c0c9056d4af0ca6e4c92aa37c0f027e029e37a5ad3ddf093363a7e58
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a malicious redirector link pointing to 'ttraff.com', suggesting a phishing or malware distribution attempt. Another heuristic detected a large PDF link farm, with many links hosted on 'cdn.shopify.com', likely used to distribute the malicious PDF or related content. The document body contains garbled text but includes the malicious URL, indicating it's part of the lure.

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=file+pdf+adalah In PDF document text
    • http://gejapa.pluckersworld.com/uploads/1/3/1/3/131379803/2bc060722b1bd.pdfIn PDF document text
    • http://files.victoriavisions.com/uploads/1/3/0/9/130969918/1709199.pdfIn PDF document text
    • http://files.worklifespanish.com/uploads/1/3/1/3/131398440/2ea150a42a2.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/1/0430/7219/2669/files/77303885762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2974/9145/files/combine_files_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/45471326056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/55503817053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/john_deere_1010_manual_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/ladunukajigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1060/2661/files/kiwizufazaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4647/7725/files/firokafexudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1327/4780/files/tro_chemistry_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/74184281950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/bujemuvagalepise.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 5

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_off000061dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DC 4812 bytes
SHA-256: 1a73afd02cac28a067b464ce5bc8a9587c3b5901fa1361fa159c731dd7490690
font_01_sfnt_off00007241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7241 10084 bytes
SHA-256: a75c0b98d5911871813693e8348d6498521eb64d66a377e8164dad06cbdf30e3

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