Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a6f6fc12e143f8…

MALICIOUS

PDF

41.7 KB Created: 2020-08-22 15:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae4b0f7cdf2356fd62841d5c23e07e11 SHA-1: c5ce198f773e5556aee5508ab1f735ee1e15bda8 SHA-256: 52a6f6fc12e143f858c7afe8a8db59e7f58d1caa9df43632fc3fb1b49939e11d
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=addition+facts+0-+5+worksheet'. The document body, though heavily obfuscated, contains references to this URL and a large number of other PDF links, suggesting a link farm or redirection strategy. The primary intent appears to be directing the user to malicious infrastructure under the guise of an educational worksheet.

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=addition+facts+0-+5+worksheet In PDF document text
    • http://files.donaldunger.com/uploads/1/3/1/0/131070294/fazigev.pdfIn PDF document text
    • http://files.torquemetals.com/uploads/1/3/1/6/131606822/c96e40efc4aee88.pdfIn PDF document text
    • http://rapafijuz.berkshirepsych.com/uploads/1/3/1/6/131606174/pufakex-dibalifi.pdfIn PDF document text
    • http://files.bigbearboardshop.com/uploads/1/3/1/6/131636612/pixuk.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/1/0438/2490/6400/files/22983449580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9386/9212/files/totozokepizipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2825/6680/files/52781619858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6195/3191/files/3288793904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6055/7984/files/zebidamiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/70065178410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9164/6880/files/11212403675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5143/7480/files/37322177310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/titewilegonegedupegilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/naraduzemifonipijabemowin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/85961254160.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_off00006495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 5520 bytes
SHA-256: 6a9dfac4d03e71c342a69d051b2b83e24d6d4caa7849948243168aede0e53415
font_01_sfnt_off0000776e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776E 10100 bytes
SHA-256: 91d388614e28014e88652e9627caa8a50d2855c1885dece5c62fe9386f4455a6

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