Malicious PDF — malware analysis report

Static analysis result for SHA-256 82dfb740736d90a2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 06:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa55697c20455d7a0b889cc119d0d936 SHA-1: 437bd11a30e51985f9081cc011963499d37cb152 SHA-256: 82dfb740736d90a2ad12af2019bd14ebcb0122d17e59fc32f7c6a3c050d66c29
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector pointing to 'https://ttraff.ru/pify?keyword=report+illegal+dumping+hazardous+waste'. This URL is flagged as malicious and part of a link farm, suggesting a phishing or scam attempt. The document body's content, though partially garbled, includes the same lure text and the malicious URL, reinforcing the phishing pretext. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=report+illegal+dumping+hazardous+waste In PDF document text
    • http://bonubo.keithalman.com/uploads/1/3/0/7/130739561/lapusosusew.pdfIn PDF document text
    • http://wejasamer.nationalriskmanagementgroup.com/uploads/1/3/2/8/132814930/52b7849dd35.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/1/0433/9915/1768/files/71003538433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1606/1091/files/90070205808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5372/6358/files/english_to_arabic_dictionary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/cumulative_sum_control_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/53701350554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/67597014336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9243/4339/files/calculus_made_easy_silvanus_thompson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/38941109283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/15616406297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6771/8309/files/91549126378.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 2

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_off00006ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC0 5520 bytes
SHA-256: 4d90aff167f2d468c4bc401501a87e43529322b994100db3efd083cb3444b94c
font_01_sfnt_off00007d72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D72 10412 bytes
SHA-256: 1a3e7b3efe299222331735ff68c149348e95550cc7ec40e265b2804f23054fd0

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