Malicious PDF — malware analysis report

Static analysis result for SHA-256 18321322b38a0452…

MALICIOUS

PDF

40.0 KB Created: 2020-08-05 03:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab32a633f30cf7cf37f96195b7b7dcf2 SHA-1: c1df410349ef6a970870f90716207a07a214f768 SHA-256: 18321322b38a04521ffeaccea77ad0b73b8caa5af2023c83cfa0fa18db9d7d3d
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL designed to appear as a 'Harvard referencing generator pdf'. This is a common lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness, supporting the assessment of a phishing or redirection attack.

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=harvard+referencing+generator+pdf In PDF document text
    • http://files.homeschoolamericanhistory.com/uploads/1/3/1/3/131381363/c472627.pdfIn PDF document text
    • http://files.grainbychriscarroll.com/uploads/1/3/2/7/132740756/zizurazigezek.pdfIn PDF document text
    • http://files.mitchellmillermusic.com/uploads/1/3/1/3/131379268/a20251751ae0e5.pdfIn PDF document text
    • http://nesiweb.oldnytours.com/uploads/1/3/0/9/130968921/devixala_luwafegik_bifilipojifuru_xetobelebizez.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/1/0432/5661/0979/files/dowudibefezuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7453/6103/files/25190454308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7729/4485/files/virtual_villagers_4_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/90434586526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4279/8757/files/david_gilmour_set_lists.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5071/0693/files/fosajokaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/28283566674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8641/3985/files/47536513216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8416/9894/files/2744093338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4658/3976/files/subukanazuwaduvebatib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/wadugunizis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/saran.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: paulreecephotography.com 4 samples

Related samples 6

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_off00005f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F29 5136 bytes
SHA-256: 34b155e3427533a30ca7bd9f06e173ad48ea7d155e9af6a05f66c09e0ca8b0d5
font_01_sfnt_off000070bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BF 10140 bytes
SHA-256: 3ab943bf4521e4e3dc1738c816f3404ac2c822624d80f43fdd7803497f7c2dfc

Open this report in the interactive analyzer, or submit your own file for analysis.