Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e773f3ae4aa359…

MALICIOUS

PDF

34.0 KB Created: 2020-08-20 11:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24bb41eb2f5db9d6aa4674c365c597e6 SHA-1: 79f2c9320f4609c8dadd4035ed4cca0eabb3aead SHA-256: 82e773f3ae4aa3598ba3d7b3a56988147d6c3f2a10f67e230eb622f7f0cbee68
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service that is flagged as malicious. The document body and heuristics indicate an SEO link farm and redirector lure, likely intended to trick users into downloading further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a second-stage payload.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=durham+reporting+centre In PDF document text
    • http://files.nickbridwellwriter.com/uploads/1/3/0/7/130775129/3b2b043322548.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/1/0434/5266/1912/files/wazuzuxodinewavifedazun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/78825218084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7295/4269/files/918280269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3189/4944/files/mudejezusimakabikef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/80697111492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3983/3763/files/alternative_investments_caia_level_i_wiley_finance_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/english_antonyms_with_urdu_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5477/4949/files/bioethics_case_studies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/gominosezurago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/kalabulibitunusevifiso.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 3

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_off00004822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4822 5136 bytes
SHA-256: a68dd7eed14f52eb7539c2508e1bff40a2782b49188f6522e28e7fd039adfb19
font_01_sfnt_off00005979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5979 9972 bytes
SHA-256: 64c7d2ecf6c48f9e02402a801dc899391a8cb9b10b395e36bb92556d2ca49f14

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