Malicious PDF — malware analysis report

Static analysis result for SHA-256 270bf128ae63e3d2…

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 09:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af849e867c6951dff3630c0815f1b9d2 SHA-1: e76f1185ebd69b4dbd3000e7e5d159a9c47b6a73 SHA-256: 270bf128ae63e3d2164727207e321611f418f77c95e9195df851b5a20b3cf9cd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. This URL is presented within the document body, disguised as a physics textbook PDF download. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering, tricking users into visiting a malicious URL.

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=physics+textbook+pdf+class+12+cbse In PDF document text
    • http://files.kathrynyarbrough.org/uploads/1/3/1/3/131384400/dejepadag.pdfIn PDF document text
    • http://sewugone.guysamc.co.uk/uploads/1/3/1/0/131070450/0b79fbbe.pdfIn PDF document text
    • http://files.musumethegame.com/uploads/1/3/1/3/131383456/jovus_mujuwa_baragerafuruw_pavedit.pdfIn PDF document text
    • http://files.mortgageinsuranceontario.ca/uploads/1/3/1/4/131408970/ea3395081748.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/1/0447/1944/0028/files/cambridge_ielts_book_8_listening_test_3_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9304/0029/files/48791568932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/sozaneranenafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/zunaguzuwusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/vobaxavovobusitugubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0916/9815/files/95837189766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/63950671938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1512/6692/files/15478477074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4109/4817/files/67464350210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/72659877177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3439/files/pujozoruvujagefaveru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9847/2605/files/household_budget_forms.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 5

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_off000073eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EB 5708 bytes
SHA-256: 72c9eff3e88f623a40c81bf2e228860017649d6cfae38bf46a96d3ea531d2585
font_01_sfnt_off00008767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8767 10012 bytes
SHA-256: 52822f357a71ff80065cae3a68dd069894b72f7576eff0ed374254c8a56a2a4f

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