Malicious PDF — malware analysis report

Static analysis result for SHA-256 728def0aeae0d831…

MALICIOUS

PDF

44.7 KB Created: 2020-08-14 23:32:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ba8eaa70e618c4b259ed012929e6870 SHA-1: 54097f711531b65750b26c97ceda1de9c0656d5a SHA-256: 728def0aeae0d831e6c383af9d20fb41f3f791819df3b765a2b6c153037785e2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though obfuscated, contains the text 'Gina asthma guidelines 2019' and the malicious URL 'https://ttraff.cc/pify?keyword=gina+asthma+guidelines+2019', suggesting a phishing or scam attempt. The presence of numerous PDF links points to a link farm strategy 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.cc/pify?keyword=gina+asthma+guidelines+2019 In PDF document text
    • http://files.wendyhorman.com/uploads/1/3/1/4/131406140/mipatiwotidasajutibi.pdfIn PDF document text
    • http://files.thegoldenspoolrules.com/uploads/1/3/2/6/132681476/muborifimirit.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/1/0445/3846/2372/files/coffee_break_spanish_guides_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/judapamepabuximexavonagin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/sajagogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/12636266487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/blue_star_cassette_ac_error_code_e8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/excel_free_timeline_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/fojewewuserotulezof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/laxubigivatodonebeveted.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mapitawaluzosamorexub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9290/8963/files/76012376599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/mijikekaxofab.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 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_off00006f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F75 5656 bytes
SHA-256: 6069a332491b43013792e6c64b2a39d39e9ebea698acf9482edfce3100012f3a
font_01_sfnt_off0000828b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 10556 bytes
SHA-256: 2cad15a66eac8631bc12bd2a194e805cca9122b2446c66bb1b5cb4a62fcbebd8

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