Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0a49c054accddf…

MALICIOUS

PDF

54.5 KB Created: 2020-08-05 05:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4276a54dcfa7cd6fcf16771567b18cd2 SHA-1: 8c88215ec8b0f6a34c64e8632c9b0d2305e65e5a SHA-256: 6a0a49c054accddf1b3198775e3420707e6bff50a3575012353e199011c6c98e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a phishing site. The document body and embedded links point to a URL that is flagged as a known malicious redirector, likely for a "free-download phishing" campaign. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=bright+line+eating+pdf In PDF document text
    • http://files.leonkew.com/uploads/1/3/1/4/131408546/xofofub_wemopamalozuwa_pubofozutege_dajajepiv.pdfIn PDF document text
    • http://files.trducks.com/uploads/1/3/1/8/131871643/jefixesupud.pdfIn PDF document text
    • http://files.flatspokecycles.com/uploads/1/3/1/4/131408529/6549756.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/1/0430/4633/8709/files/volugasusikifozawaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/vedaxixepakomumigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/77071209978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/serway_faughn_college_physics_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/apprendre_langue_allemande.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4896/8090/files/sikofim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4089/0262/files/tojamafiwubakawelamujom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6614/6472/files/tusolozazimodewixip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/furodusekuwexipudawixar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8864/9123/files/badodedonivumonavesepugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/66971483930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/39021642194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5062/2358/files/engineering_drawing_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4384/7328/files/7012752132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0834/7547/files/english_grammar_quiz.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA7 5176 bytes
SHA-256: 52f46407acad4bcbe4d824f2c7e58ab6b8f6a7ab0bfc30a28334163648c6b9b8
font_01_sfnt_off0000a03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA03B 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000a8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8C9 10388 bytes
SHA-256: a81fc6ec013a0238a1218161d25e3825bed362282cff45f4d34b17d74c6b040d