Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b2a74d76684b20…

MALICIOUS

PDF

48.9 KB Created: 2020-08-18 16:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b1d634edb4ab934cffdcdfdd705298c SHA-1: c7a1c38d341cd238b268dd0db808cf768f7b56be SHA-256: 82b2a74d76684b20195815c268a5361891a89f999d1222ae7f422bec91695bd1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external PDF documents, many of which are hosted on Shopify and appear to be part of an SEO link farm. The primary redirector URL, https://ttraff.com/pify?keyword=air+pollution+pdf+ppt, is known to lead to malicious infrastructure. The document body, though heavily obfuscated, also contains this redirector URL and several benign-looking Shopify links, suggesting a lure to download further content or be redirected to a malicious site. The ML classifier strongly indicated maliciousness.

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=air+pollution+pdf+ppt In PDF document text
    • http://dadilaf.forestcitycremation.com/uploads/1/3/1/8/131856890/48dd8028fb64.pdfIn PDF document text
    • http://files.thechakrahousemn.com/uploads/1/3/0/7/130738512/5325160.pdfIn PDF document text
    • http://files.mulbartonwords.org/uploads/1/3/0/7/130738771/5525033.pdfIn PDF document text
    • http://files.printable-ebooks.com/uploads/1/3/0/7/130776592/retasu-rawolovomofa-wozofu-tanoj.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0437/4944/1687/files/56959029541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/kometevap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/mudibefutapitola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2247/5687/files/ziridujawinusidobige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/58161099932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/voxalipoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/65187164732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9202/5249/files/15407122818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/jack_lalanne_s_power_juicer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/airway_management_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6C 1880 bytes
SHA-256: 45a24ce742cd26c6c30da73c92092d980bca8c94fd82f77222a44bc2fb87c2d5
font_01_sfnt_off00008390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8390 4636 bytes
SHA-256: 712ab181a5301654270ba4e078e91943cb0a9a0deeb404d33115025255f557ac
font_02_sfnt_off00009360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9360 10472 bytes
SHA-256: 7f74e0a3064c7b8338f1e8afc094de33e8c68abe3309ba817bd1ca92bfa78a38

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