Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5365db931b30ff1…

MALICIOUS

PDF

73.1 KB Created: 2020-08-25 07:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e44f812518a40886c78aa1ac2da4f3ff SHA-1: 88467a3c332085be7c36342420bd293133c911ea SHA-256: d5365db931b30ff1f167baf57231f41ae3ff6426f43257f698b1eb2c407c0ab7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it features a PDF link farm heuristic, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly flagged this PDF as malicious. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=acetone+chloroform+polarity', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware site.

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=acetone+chloroform+polarity In PDF document text
    • http://kezenemif.pilgrimcamp.net/uploads/1/3/1/4/131438860/1e3016a60e85cd.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/1/0433/3761/3461/files/dokisidedomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/fejeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7879/2869/files/15230213107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/97199042800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5320/3104/files/chirosathi_bengali_full_movie_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/gakukitunuvixagasigenejab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/bedatogavalopinizalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/vizakumarerivobod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2556/4567/files/cable_stayed_bridge_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/echo_fine_properties.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC21D 6492 bytes
SHA-256: 6f1d8689135935accf0dcc3769b7c4c8959bed6ef350b9125ab97fdba8b1d09c
font_01_sfnt_off0000d252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD252 5168 bytes
SHA-256: c329bd2e7b92f0b4f96e12404342c777d3846234d50534298cd9ab7a3073791e
font_02_sfnt_off0000e3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B4 15944 bytes
SHA-256: 49b189114200175d79a17142835b583d9aef99df3edc032aa15214c572d892ac

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