Malicious PDF — malware analysis report

Static analysis result for SHA-256 f55d71ab2e75398b…

MALICIOUS

PDF

51.2 KB Created: 2020-08-01 16:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a77825600fe3c02b38e6b55083543b8 SHA-1: f14a3a296612f7250f83e8db59de920cf2ef9367 SHA-256: f55d71ab2e75398b6b4011ac399569c77db6a50a41121eb3e9a453f831a276e9
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=queue+class+c%252B%252B', is identified as a malicious redirector. This suggests the document's primary purpose is to lure users into clicking malicious links, likely leading to further compromise.

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=queue+class+c%252B%252B In PDF document text
    • http://files.muckypupspreschool.com/uploads/1/3/2/6/132696029/nitedej_satejexefu_tadasulowu.pdfIn PDF document text
    • http://files.noelandjackiesjourneys.com/uploads/1/3/2/6/132696128/143318.pdfIn PDF document text
    • http://files.rocadog.com/uploads/1/3/0/9/130969772/626ee.pdfIn PDF document text
    • http://files.dwfd.org/uploads/1/3/0/7/130776268/9d3e3.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/1/0439/8533/8526/files/98501621567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/61385595252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/pekuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/28680916102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/19827523564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kopamidije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/fujilabulijogokelijagipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/nunoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6859/5112/files/86376418938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1124/3162/files/falonewufumodogadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/88786380000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/sizuwusewefotis.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00006f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0E 4760 bytes
SHA-256: 9272e540dd5b11a68c9dd98ef461eefc0620ad513c4cae9742c903c497462948
font_01_sfnt_off00007f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4D 13776 bytes
SHA-256: e4694fdb83b03085401b713cf77b2a81896cda47a1f69eb5e902a0eecf2f4f1f
font_02_sfnt_off0000ab10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB10 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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