Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3b28250563a88f…

MALICIOUS

PDF

43.4 KB Created: 2020-08-12 20:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5b64441a558dd39ebee731ced92e0cd SHA-1: 59a7e906bbdb39f27c3764c8526dc58e42be3096 SHA-256: 8f3b28250563a88f1f8dab01f57d58c4f7422a5445330df5532159ed33c0c7a4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector (ttraff.cc) that is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'Adobe acrobat pdf reader free download for windows 8', suggesting a social engineering lure. The presence of numerous external links, many hosted on Shopify, further indicates an attempt to distribute content or redirect users to malicious sites.

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=adobe+acrobat+pdf+reader+free+download+for+windows+8 In PDF document text
    • http://files.wooff.ca/uploads/1/3/0/8/130874627/daxotovonugusa_joraba_wosixavimus.pdfIn PDF document text
    • http://files.timberlinebands.com/uploads/1/3/1/4/131483138/db73d5f46.pdfIn PDF document text
    • http://nopone.tiffanysews.com/uploads/1/3/0/7/130738720/resanotefu-bowure.pdfIn PDF document text
    • http://fibova.hiesladybears.com/uploads/1/3/1/4/131438437/pugabutisimated-jubisopadomaf.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/1/0434/5063/0296/files/wepizuxufaxamepav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3214/9148/files/tijoxab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6851/3686/files/cub_cadet_lt1045_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/38889196621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6959/1967/files/65441025353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8511/files/56552237248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/83374509954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/makalirefaxedijubixowim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/75364811029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/28805802073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6773/files/little_fugue_in_g_minor_trumpet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9D 5564 bytes
SHA-256: a78056970a48504ef14ecb6884dcb63b41676850b68d27a6e11903900544853a
font_01_sfnt_off00007da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA3 10088 bytes
SHA-256: 3a972c8e1085c51e36a17136a99184c5983dac84689674e2a1166072495bdad5

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