Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f63bc47cc2e3c3…

MALICIOUS

PDF

47.7 KB Created: 2020-08-01 21:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a5faeab381511f6bfeb2d3cb40b5975 SHA-1: ba16a48009a2321c226cde471e1f26f30f2fe2f1 SHA-256: 57f63bc47cc2e3c358ed3f62c6cc2e205aa773a108728b36c0c91ba1e66aa2ed
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=purdue+housing+portal'. This URL is presented within the document body, disguised as a Purdue housing portal login. The file also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains. The primary malicious URL is designed to redirect users to potentially harmful content.

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=purdue+housing+portal In PDF document text
    • http://files.sukujewelry.com/uploads/1/3/2/6/132680827/d59747b.pdfIn PDF document text
    • http://files.holzlawnandlandscape.com/uploads/1/3/1/3/131380485/tukewasoputete-junigaxifav-wuseji.pdfIn PDF document text
    • http://files.myartscreations.com/uploads/1/3/1/4/131437484/vulupozotaxoxem_sifofavobojozav.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/1/0431/1724/8672/files/lagobebewaborovivoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0216/5410/files/can_t_hold_us_clean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/belefipowogixomonaluso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/revixixoxugonide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/double_list_login.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69865881622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/manawikuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6243/3694/files/99853546597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/fagegaxapezinabom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/43628354113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/rupiwodamejovakulapog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2549/0332/files/88740669076.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_off00007afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFC 5224 bytes
SHA-256: 0c9b3bf66aec5a9e3e1fbcb0b7d7aadbb543a419cfae9fdebef9ba807d9c2d16
font_01_sfnt_off00008cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB8 10860 bytes
SHA-256: 2f0c08216e10830012d808c67f483792d4af7a29527493a244d702f0d1b33646

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