Malicious PDF — malware analysis report

Static analysis result for SHA-256 845134a30cbb9935…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 14:27:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a09238dcefee7acbb0e65a6053840fe SHA-1: 84e597bb0d13f1f0c01d46c96f90cb5bc93f822f SHA-256: 845134a30cbb993580420f3fc845627b2f8b210e9d1bde2dfa077a2d6213b9cd
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and other URLs that appear to be part of an SEO link farm, suggesting a lure for free downloads. The ML classifier also strongly indicated maliciousness.

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=china+movies+in+telugu+dubbed+free In PDF document text
    • http://files.holytrinityberlin.org/uploads/1/3/1/0/131069812/5a0b3.pdfIn PDF document text
    • http://zenel.littletownbakeshop.com/uploads/1/3/0/7/130775795/aa236c0862.pdfIn PDF document text
    • http://files.framemysore.org/uploads/1/3/1/3/131384789/7349004.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/1/0433/6179/6248/files/2083438865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/mutawabalapofoweval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3059/9064/files/stronghold_hd_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8035/1897/files/xonivadukilomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2088/files/55485500410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/fumozunupomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/the_artist_way_julia_cameron_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1288/1564/files/cracker_barrel_lafayette.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5091/8310/files/tibelasabobipebivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0795/0495/files/40929216957.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D08 5428 bytes
SHA-256: a200f8777df79d8fe70f0b4a5dc6b32f23d368fc8cee7d6b1defbe7a71d06edd
font_01_sfnt_off00006f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F43 2116 bytes
SHA-256: 991f7ef292b59849fa1804c361c52a6255426db797fbcab3b5d31d1f34ee76c9
font_02_sfnt_off000078ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 10376 bytes
SHA-256: c2a7895decbaabe9cce8ae2b3f8bee25b131a4b74ddb81ff75d95092ea0c6dd8

Open this report in the interactive analyzer, or submit your own file for analysis.