Malicious PDF — malware analysis report

Static analysis result for SHA-256 66ce6e9f6efd2cd2…

MALICIOUS

PDF

43.3 KB Created: 2020-08-14 03:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74a48f9a7cbe38ff6adb132698a27fad SHA-1: a3f66872ae64626401288d847cd747815fa84d46 SHA-256: 66ce6e9f6efd2cd2ecf5e9f37b3633fa64367ce068ad84a51b66d73465a87d3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one to a known malicious redirector at `https://ttraff.com/pify?keyword=chillerama+2011+subtitle+indonesia`. The document body, though partially obfuscated, also contains this URL and appears to be a lure for downloading subtitles, suggesting a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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=chillerama+2011+subtitle+indonesia In PDF document text
    • http://files.tarheelwrestlingclub.com/uploads/1/3/0/9/130969184/1291201.pdfIn PDF document text
    • http://files.ministerdebweddings.com/uploads/1/3/1/4/131453106/fugazelibuw_mapovazefow_bunefe.pdfIn PDF document text
    • http://files.ebanhelsinki2019.com/uploads/1/3/1/3/131384442/gizonazofu.pdfIn PDF document text
    • http://files.deafcatholicjoliet.org/uploads/1/3/0/9/130969172/bezalofosoxeg.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/1/0437/1116/8664/files/85714510000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/ahmad_jamal_poinciana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/38502645556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/chemistry_textbook_class_11_gujarat_board.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1274/6390/files/wadokosokasob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4817/3722/files/93721411407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1879/files/gazanokebegafenumivisosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/czasy_angielskie_wiczenia_liceum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/lizozogojaxolejozimeforuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/bejarenevivugodiluxufap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/wosekuke.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 6

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_off00006b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B73 5436 bytes
SHA-256: af390b3222663700b2a1dc7314c92f365bae16bdf96887893c8c1908d62bf2f2
font_01_sfnt_off00007dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBD 10276 bytes
SHA-256: c9a8d4e83193e93497f9f50e890cb34891f7baca80e449ebe390f2156a079076

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