Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ffa32653c34eb0…

MALICIOUS

PDF

46.7 KB Created: 2020-08-23 01:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31f527dec83cd0e053a36167ffbdb660 SHA-1: e699650fa3439695fe566675c0bead5f3e16ad55 SHA-256: 76ffa32653c34eb09a58160d8a45dbd08c34999fedf3265c23aab6754809deea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector infrastructure at `https://ttraff.com/pify?keyword=guided+reading+lesson+grade+4`. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or malware distribution. The presence of numerous links to PDFs hosted on Shopify, some of which are benign, indicates a link farm strategy to obscure the malicious redirector.

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=guided+reading+lesson+grade+4 In PDF document text
    • http://xitoderar.cespremierpropertymanagement.com/uploads/1/3/2/7/132711947/likegokozo.pdfIn PDF document text
    • http://files.sanziannaintegrativehealth.com/uploads/1/3/0/7/130775032/disekadojikivij.pdfIn PDF document text
    • http://files.racarons.com/uploads/1/3/1/3/131383588/188d1cb4c5fd95c.pdfIn PDF document text
    • http://pomidebe.banginhardfireworks.com/uploads/1/3/2/6/132681482/tumipepesinez-fivigut-tipunuripokoge.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/1/0428/9688/3868/files/72592123892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/cracking_the_coding_interview_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5183/5543/files/33840015037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4154/files/78152368255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/1_to_1000_numbers_in_english_words_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/45279703898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/powerball_3_9_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/10709109362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2814/2501/files/jewez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/vector_algebra_solved_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/mac_pip_command_not_found.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_off000077c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C9 5112 bytes
SHA-256: 9f3e32a0bc6a206f49531b73a3920fa7f861e63c1e0e1bb994e0d9617cba3e41
font_01_sfnt_off0000893e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893E 10784 bytes
SHA-256: c037a9773a2ab7209dfe3757fbb0ea93101a86626b399baf2085f8f0a2cdb38a

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