Malicious PDF — malware analysis report

Static analysis result for SHA-256 669bdd79aa3a46cc…

MALICIOUS

PDF

46.3 KB Created: 2020-07-19 23:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51932a401f348199df2304f7b75075a2 SHA-1: 450ebfaacafdba4dae0d889d3e5b4a6d5a5cdd9d SHA-256: 669bdd79aa3a46cccbcb15c91c03900e5ed1f788819eeeb353aae1239c9d6828
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirectors, including one identified as a malicious redirector for 'banking chronicle free download pdf 2020'. The ML classifier also flagged this PDF as malicious. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to create a link farm or distribute malicious content under the guise of legitimate downloads.

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=banking+chronicle+free+download+pdf+2020 In PDF document text
    • http://files.leeclarkzumpe.com/uploads/1/3/0/7/130775942/345173.pdfIn PDF document text
    • http://files.lorilorion.com/uploads/1/3/0/7/130776886/rutonufitusafam_dagubunazuke.pdfIn PDF document text
    • http://files.expressivebodyandnails.com/uploads/1/3/0/7/130740517/wuxexup_pamamu_tedunoxalot_retexepisuwo.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/1/0433/0687/7080/files/jikoleluvotejagumali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/84432915665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95181885481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4102/1334/files/47535041728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/45659384463.pdfIn PDF document text
    • https://joguvabevas.files.wordpress.com/2020/07/kegikedaf.pdfIn PDF document text
    • https://wijojuwatip.files.wordpress.com/2020/06/89580536594.pdfIn PDF document text
    • https://wivezojajut.files.wordpress.com/2020/06/vejefivexesuzesumamedado.pdfIn PDF document text
    • https://fuxofifusod.files.wordpress.com/2020/06/movosupoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/1862915201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/volinepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/66669268650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4387/2150/files/75658117915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/jujemusoxede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4079/2999/files/10163966237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53681635306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/fipuxibus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/rabofivawedepupalavonerif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nefodegaxinavikiva.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7617 5428 bytes
SHA-256: 77d924db421212d43bf8334b6d579cd2b930992e937565b429e82f9a6683cead
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 10252 bytes
SHA-256: aa510607e2526fe0f6e5fd6b9793fe6b5c88a2b162664f6ec4f5da9033972fa6