Malicious PDF — malware analysis report

Static analysis result for SHA-256 8026b783a929ffd1…

MALICIOUS

PDF

37.1 KB Created: 2020-08-05 07:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f125665284d0682d2db83ef2f6cacc7 SHA-1: 357a2d40015b4935ca50d18086e6234a606e99b6 SHA-256: 8026b783a929ffd1b80cd5d69091dab3b727db50079bf95552842948dbbe482b
194 Risk Score

Malware Insights

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

The PDF document contains a link farm and a redirector URL, masquerading as a free download for a statistics textbook solutions manual. The embedded URL https://ttraff.com/pify?keyword=mathematical+statistics+with+applications+7th+edition+solutions+manual+pdf+free likely leads to a malicious payload or phishing page. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to generate traffic or distribute further malicious 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=mathematical+statistics+with+applications+7th+edition+solutions+manual+pdf+free In PDF document text
    • http://files.australianupholstery.com/uploads/1/3/1/4/131438313/4928499.pdfIn PDF document text
    • http://files.theproseccoproject.com/uploads/1/3/1/4/131407552/3384683.pdfIn PDF document text
    • http://files.entotofoundation.org/uploads/1/3/1/6/131606745/21828a2.pdfIn PDF document text
    • http://files.livingtechniques.com/uploads/1/3/0/8/130874254/xukezogulomafin-lamez-tonofajazofege-poxefis.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/1/0431/6839/9524/files/butezedudoxadim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/kekogupebiwixoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/7162366753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/mekip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depusulolunifanilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8647/1587/files/24336587025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/lmao_text_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/xeturupiverug.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 8

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_off0000517b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x517B 5572 bytes
SHA-256: 7926e65f717f942eb39b2c09d602f83d2ad1ffdf188f570bc5998237872f64f5
font_01_sfnt_off0000646f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646F 10056 bytes
SHA-256: 86fdc6d6d50e32ef0cc3f42a5e55a197623594fd2e74e1315075a5ec8d91bc25

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