Malicious PDF — malware analysis report

Static analysis result for SHA-256 b361198d8467b605…

MALICIOUS

PDF

39.5 KB Created: 2020-08-21 01:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ca60710ede698dca99cd9d4a634be70 SHA-1: 8d49445c3c8090fc5d053d9e0876ec30d8037282 SHA-256: b361198d8467b605d6d2c3d49ca7a0fdf0b60dead208ec460001cdefc06ae8c8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=nccn+guidelines+mantle+cell+lymphoma'. This indicates an attempt to trick users into visiting a malicious site, likely for phishing or malware distribution. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The presence of these links and the redirector strongly suggests a social engineering attack aimed at directing users to harmful 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.com/pify?keyword=nccn+guidelines+mantle+cell+lymphoma In PDF document text
    • http://gapabu.avhscoreacademy.com/uploads/1/3/1/0/131070450/wutix.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/1/0434/6013/3030/files/38044112872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/kexakiwikopojetovanil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3504/0664/files/segedawedazapobuxolaxoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0547/4978/files/49586421730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/takedinuvejipususukagugit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6254/8887/files/41959027900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/finatabiwinigel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/broccoli_enter_the_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/93422481849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/nevatomusujuxexugaduxid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8582/7991/files/caroube_proprits.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: avhscoreacademy.com 3 samples

Related samples 1

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_off00005c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7F 5464 bytes
SHA-256: 541eb14bc4bef28add9c5a399764d1b522befb572646c79880ea18a8a01cc802
font_01_sfnt_off00006ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 10164 bytes
SHA-256: cc61c16218fca7dc2a25e079940ba43a2c9eb818101ce6cdbfbcf8c19ef015b6

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