Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8031a65a857fc9f…

MALICIOUS

PDF

42.6 KB Created: 2020-08-08 17:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 509384d08e6a7922b62781870564b685 SHA-1: 15049313bfcc30552ce63e90008ee71b1ae0b112 SHA-256: d8031a65a857fc9f37bcd6df21b3bd49f0fdfcade4128d0d96248bd595d1e2c9
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=about+yourself+essay+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the text 'About yourself essay pdf', suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting the user to malicious infrastructure via the embedded link.

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=about+yourself+essay+pdf In PDF document text
    • http://negotaz.jackpotsportfishingcostarica.com/uploads/1/3/1/0/131070786/nakaron.pdfIn PDF document text
    • http://files.6yedollglobal.com/uploads/1/3/0/7/130739836/larolorimutiloxil.pdfIn PDF document text
    • http://files.affordabletowingnearme.com/uploads/1/3/1/4/131483491/2004edf72.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/1/0438/1723/8685/files/98560136105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/rozuwazupolokilukogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/8342866141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/37924437157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2519/3368/files/gubufowuzimagidef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/2002_vw_passat_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/54606601489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/nuwave_induction_cooktop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8603/5621/files/44712996024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/learning_vlookup_in_excel_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6582/7747/files/flyingtuna_osu_skin.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_off00006a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4A 5264 bytes
SHA-256: 2549cc34875ac25d3cce434b8b2832cd3fddf6d736f91c8351e57912bc30517a
font_01_sfnt_off00007c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C44 9880 bytes
SHA-256: a97bb04208aa83a6a5cb5455f1f0fd628cb4c7f944ffce4a014ecdb0ee09951e

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