Malicious PDF — malware analysis report

Static analysis result for SHA-256 8828d721d496bde1…

MALICIOUS

PDF

47.4 KB Created: 2020-08-31 01:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4cb7045aa69ca0d808726516a7508eeb SHA-1: 499bd802d3e4b1504de4d5869649ded62bf6528c SHA-256: 8828d721d496bde10d6a7845f45e21a17ceb389baeebd84da3a2ee64dc402e11
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'leveling guide' and the malicious URL, suggesting a phishing or scam lure. The presence of a large number of external links, including PDF links, indicates a link farm or SEO manipulation tactic to distribute malicious content.

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/wix?keyword=zandalari+enchanting+leveling+guide 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/1/0431/8943/6580/files/3209731739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/alagappan_medicine_6th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/sustainability_report_pt_pertamina.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/136d07_f77a4c7ebb244b29a51e0e940a3f8df9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/429b25_f7b63128fb71468197d1f6cb071783d2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ad0a4e41112c4a19a55a6ec05c1513df.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/08fe48_ea58fc8ddf30489fbb941c2fa300716f.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/mamepan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/how_to_read_a_person_like_a_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61053474184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/zazibogafazedenasuweme.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f60e6bf37bba49bab33a35556f3a8162.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/83b1b3_e815e16fa99040b2931894b6c06d3e86.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7d1dc9_1c0ae41aa46442e3aa107ebcb75d15be.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d902bb_e643301a60034115893a40fc11753706.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
🗂 Part of campaign: uhsbe.org 3 samples

Related samples 1

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_off00007565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7565 5040 bytes
SHA-256: deb0883826b46e03448b939726a80ec94410ef2b008b9d2afb82fb3ce8d7a5f7
font_01_sfnt_off00008687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8687 13228 bytes
SHA-256: 86354e1bbf1c340899d6a3add1a66277f98027f6573facfed61127ef1bcc92e7

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