Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a586ddd9e5c5e99…

MALICIOUS

PDF

47.1 KB Created: 2020-08-22 04:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aed9ac3829456e8ac729f26c6646f3e2 SHA-1: 47e77072d7a80b8ac43abdf9ba366e69e91bf9f8 SHA-256: 3a586ddd9e5c5e999682778ea6fdeda2c77abf0099987ebf94889a6f65fd5c6f
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=graphing+quadratic+functions+standard+form+worksheet'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning tactic to obscure the malicious destination.

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=graphing+quadratic+functions+standard+form+worksheet In PDF document text
    • http://files.gavrielrosenfeld.com/uploads/1/3/0/7/130775277/sobux-vivil.pdfIn PDF document text
    • http://files.redkinonline.com/uploads/1/3/0/7/130776167/9137584.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/cctv_camera_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9776/5528/files/89012742027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7792/6040/files/cecil_textbook_of_medicine_26th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/nikoretapogifebiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6117/4687/files/78560366928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7878/2869/files/pathogenesis_of_pneumonia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/raboviladota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7260/8663/files/escherichia_coli_atcc_25922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7618/1404/files/les_adieux__la_reine_livre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/29755983100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/jogabijubironolebezoviku.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 3

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_off000061ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61ED 5732 bytes
SHA-256: 1dca872700264f32c10838d30ba42967f13c73dd802039f110ef318fd3305b7e
font_01_sfnt_off0000754b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754B 13696 bytes
SHA-256: f927b839342e0790347e2c0f90ec9729a3344725bd23585ce32a52b85cfa7d84
font_02_sfnt_off0000a153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA153 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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