Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad05928d29b7e8e…

MALICIOUS

PDF

34.5 KB Created: 2020-08-18 14:24:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31e0a02521c6babd83d4fae955f529ec SHA-1: d8fc62176ea50642ba278f75f35063fd35d0db04 SHA-256: cad05928d29b7e8eb9c51deb6baec454e88d287112755c61abc2c77c4963c62e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=friendship+day+pictures+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though partially corrupted, contains the same lure text and URLs, reinforcing the malicious intent. The primary attack pattern involves social engineering through a deceptive lure to drive clicks to malicious infrastructure.

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=friendship+day+pictures+free In PDF document text
    • http://files.snugharbormarina.com/uploads/1/3/1/4/131438111/6755061.pdfIn PDF document text
    • http://mowiriwum.innerlight-center.com/uploads/1/3/1/4/131409090/befuzukijopasegupi.pdfIn PDF document text
    • http://files.sacredmotherarts.com/uploads/1/3/1/4/131437987/nekuvu.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/1/0429/8797/8913/files/25248408420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/arbitersports_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2195/1391/files/code_of_honor_alan_gratz_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/esclerosis_multiple_sintomas_tempranos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/gomebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/savunisetovabarivol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/pdf_bookmark_maker_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3245/3015/files/57512540069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89853177043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/rujanurisilumipan.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 4

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_off00004a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A9E 5268 bytes
SHA-256: 9a6a4219cb60b3cf397d8649e5da4e1205bc07fa46d5035786a0c855dd5411e8
font_01_sfnt_off00005c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C85 9696 bytes
SHA-256: 92094412f4b7753d462028919d2d8fabe52923d8d3ceee9290b34e73b22c6de7

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