Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c707241e640027…

MALICIOUS

PDF

51.0 KB Created: 2020-08-21 04:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c597eb58ef2011c4661a35a29af9a7a2 SHA-1: 35a85d9b837ca01aab9aa3fda977ff1842a21227 SHA-256: 16c707241e640027a71f15339a5556de7ea8866ab173ad89c87279297730b4d8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to redirectors and SEO link farms, indicating a phishing or malware distribution attempt. The primary redirector URL, 'https://ttraff.cc/pify?keyword=fleet+maintenance+schedule+template+excel', suggests a lure related to a maintenance schedule. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to malicious content.

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=fleet+maintenance+schedule+template+excel In PDF document text
    • http://files.whitneykimpton.com/uploads/1/3/1/4/131438639/9369832.pdfIn PDF document text
    • http://files.handmadebylouisa.com/uploads/1/3/0/7/130775827/25f7f89e987e0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/vunatijeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/gojewaxoxovaxaxafanalak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/63550632559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7190/5698/files/8601811401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/zutexaxuzezasomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/new_minecraft_textures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5964/1496/files/mewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/61554376517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/lukitivusodebawuguxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/54649465833.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_off00007db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB0 5012 bytes
SHA-256: adb87fbaac7dcc49bbac3e908cc16ba7fc763c01bca1749cb7aba5099f4c795e
font_01_sfnt_off00008e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E87 10212 bytes
SHA-256: ec0c6a4d51b47e4e05eb9e45f89a965e5ec3ba94ed17578d0459f29fcf1df5e5
font_02_sfnt_off0000b15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB15E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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