Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b24595b85d068f5…

MALICIOUS

PDF

47.9 KB Created: 2020-08-03 18:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1ed9f9c5e3f3e9e11f0de13045baf1f SHA-1: c83dfa197b448f0fafa406feeac7f00e5267eb71 SHA-256: 3b24595b85d068f5d0c5cbd25ac7fe9add31c34c005b8b3c22102c98310b38c0
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text fragments that appear to be related to the lure, including the URL itself. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier 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=belt+conveyor+book+mulani+pdf In PDF document text
    • http://files.fireflyfamilydaycare.com/uploads/1/3/2/6/132695714/1509396.pdfIn PDF document text
    • http://files.mybodyofknowledge.net/uploads/1/3/2/7/132741486/9286164.pdfIn PDF document text
    • http://files.mchenrymaltesepuppies.com/uploads/1/3/2/8/132815742/tosejutazigak.pdfIn PDF document text
    • http://files.arroyooakshoa.com/uploads/1/3/0/7/130739951/kuzuz_gevebu_woxaxasite_gidon.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/1/0431/7921/2960/files/st_thomas_weather.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2386/5768/files/18383224637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/82093531743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8940/3810/files/sizizirox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/79382100511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6052/7265/files/jaxalowozutexidemafuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/sijozuvoridibaxaposor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/90016115163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/nefewo.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
🗂 Part of campaign: arroyooakshoa.com 4 samples

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_off00007c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C91 5540 bytes
SHA-256: e3bd0e1f5c27f6ae9db5378a985d20da4d696f07325fd77e6de192aa07bc8601
font_01_sfnt_off00008f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F63 10464 bytes
SHA-256: 6b821e3fa3bffa405ca1d606d65923ae73d2f22093cb23aef8d6e97411e12bed

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