Malicious PDF — malware analysis report

Static analysis result for SHA-256 0675f50645cdd5e1…

MALICIOUS

PDF

41.7 KB Created: 2020-08-03 03:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6336503333beadc1666a9b78ede838e0 SHA-1: 52d82c618d100ca7e73f30160160d98baf879788 SHA-256: 0675f50645cdd5e123359eaaa5893a2d773876c08fb27a87785142cb0dbc0265
202 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body and heuristics suggest a lure to download further content, likely malicious. The presence of multiple PDF links and a critical redirector link indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=the+bfg+lesson+plans+pdf In PDF document text
    • http://files.tedxarnhem.com/uploads/1/3/2/3/132303172/3146e35.pdfIn PDF document text
    • http://files.chromechasersflyfishing.com/uploads/1/3/1/8/131858791/6178122.pdfIn PDF document text
    • http://files.alstrangeways.com/uploads/1/3/1/3/131379894/gipopokufi.pdfIn PDF document text
    • http://files.southbyland.com/uploads/1/3/1/6/131636655/c96c044bcfb5df.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/1/0428/0070/9791/files/22583490271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/goxoseripobenej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2724/2903/files/vokufaposuwukemorinitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/17776671328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0653/3527/files/jevazukukusarusut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/damuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/28156436641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/10835454516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/94789811530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8125/2507/files/ruxomuwemifafiworo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/57673500941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/kobowefesexelijamobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2610/2947/files/76437919409.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: chromechasersflyfishing.com 4 samples

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_off00006528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 5296 bytes
SHA-256: 4b1aa9df192ff7032fc6ff55a429d31ae2062572c15e1840abcd5a12717234bf
font_01_sfnt_off00007728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7728 10240 bytes
SHA-256: 3d3f0a3b231f0414d7f3235a5a200d49abdba1dad80ed6b1883185a7e7f7726f

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