Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cfbfaea54518e2…

MALICIOUS

PDF

72.1 KB Created: 2020-08-08 05:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50e7bb1103c7dbcd049993e22c468365 SHA-1: 37643c1fa00568020a54c87ec3b9791207ceab89 SHA-256: 35cfbfaea54518e2f87d11d1deb706fd0ebf05bf40e01f9b7cbfd0fff47881f0
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 'https://ttraff.cc/pify?keyword=aiou+admission+form+pdf+2020'. This URL is presented within the document body, disguised as an admission form. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary intent appears to be redirecting the user to malicious infrastructure.

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.cc/pify?keyword=aiou+admission+form+pdf+2020 In PDF document text
    • http://files.offmyeasel.com/uploads/1/3/1/3/131379268/mumosoriza.pdfIn PDF document text
    • http://files.mollypelletieryoga.com/uploads/1/3/1/1/131164573/nutojoka.pdfIn PDF document text
    • http://files.grindrsuccess.net/uploads/1/3/1/6/131606630/4668998.pdfIn PDF document text
    • http://bagux.ardingtonschoolofcrafts.com/uploads/1/3/2/3/132302963/zaxeviv.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/1/0447/9008/7829/files/elements_of_aerial_photography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/edit_content_in_word_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/latomoderarek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3028/files/sierra_5th_edition_reloading_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/18595892418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/xukadadilaxuniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/folizajebaredanevorulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/bowidijebonuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1741/2501/files/32103121505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/14674776213.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD350 2828 bytes
SHA-256: a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8
font_01_sfnt_off0000dd4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4A 5416 bytes
SHA-256: e9c6446113628d838a644b431901934a47231e6e85e818b844bf6ca9ac99d59e
font_02_sfnt_off0000efa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA2 10392 bytes
SHA-256: 88430b3ee4e01cc81d08fe0a2a6d480272e3bdbbe112164213b307e34f19c01b

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