Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a097db5b1d0446…

MALICIOUS

PDF

33.8 KB Created: 2020-08-04 22:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2495bbeec9f26970f32bd9752ded8239 SHA-1: a12231561171646d4156388154abc0a048263c46 SHA-256: 58a097db5b1d044606c9e3b1e3d97263e1282f3fb5ca9550b269c3b79095492e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a known malicious redirector infrastructure. The document body, though malformed, contains text related to an 'entrepreneurship curriculum guide' and a URL that mirrors this theme, suggesting a lure to disguise malicious intent. The primary malicious URL identified is https://ttraff.ru/pify?keyword=entrepreneurship+curriculum+guide+for+senior+high+school+pdf, which is likely used to redirect users to a phishing or malware distribution site.

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.ru/pify?keyword=entrepreneurship+curriculum+guide+for+senior+high+school+pdf In PDF document text
    • http://files.carolinefineart.org/uploads/1/3/0/9/130969472/2c4da5239f65cf.pdfIn PDF document text
    • http://files.key2evolve.com/uploads/1/3/0/8/130874318/zasabuxemer_xawapikiguromik_balasoge.pdfIn PDF document text
    • http://files.mikecartermd.com/uploads/1/3/2/6/132695813/zenevob_petovuzuk_roxosaxelagosuw_bibom.pdfIn PDF document text
    • http://files.neilchalmers.com/uploads/1/3/0/7/130740563/bikixiritu.pdfIn PDF document text
    • http://files.olphartz.com/uploads/1/3/2/6/132681502/gijawi.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/1/0435/1298/7802/files/73731449316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/69570448889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/banabules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7674/files/ibps_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2418/5506/files/61981922396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/5486879949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1806/6843/files/91659044615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/79316875843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74808095599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/vulapodoset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/14774366947.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45DD 5316 bytes
SHA-256: 37d55f110291deb0c1d7a531396eab64593ad9ba0ce43b1be8888f9d1b1b4549
font_01_sfnt_off000057cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57CC 9844 bytes
SHA-256: dc7e4799fa264b65e4a1f3c029f2fb4e8e3ad895613b16c6ea3561a57ccde96a