Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf18bd64870afef…

MALICIOUS

PDF

48.2 KB Created: 2020-07-26 22:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 188bbabe8a74db7410d44ca13512cd68 SHA-1: d7819adfc82ad55ca81995c60dcf4f7af3e8b3d5 SHA-256: 7bf18bd64870afefd458011f87a176f4cf1cf31e0efa31be1b35f45aa7cd468c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to an SEO redirector service. This service, in turn, redirects to various PDF files hosted on Shopify and other domains, presented as 'free graduate CV templates'. The ML classifier and heuristic firings strongly indicate malicious intent, likely to distribute further malware or phishing content through the link farm.

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=fresh+graduate+cv+templates+free In PDF document text
    • http://files.silverjewellerybypeterkibbles.com/uploads/1/3/1/4/131453998/7325050.pdfIn PDF document text
    • http://files.killingfieldsmuseum.com/uploads/1/3/1/4/131409508/dapujemifami-vezevutolodowi-vowuw.pdfIn PDF document text
    • http://files.bcraftmath.com/uploads/1/3/0/8/130874067/wubeni.pdfIn PDF document text
    • http://files.bsquareddesigns.net/uploads/1/3/1/6/131606201/migitetud_jufevifatupuga_nisadesew_futukiriji.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/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/9647936974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/zumejusowow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6319/6310/files/gisodomuboxiwogiveli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1036/6362/files/20784312655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/37852755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/81481465924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8956/6623/files/pileruxibek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/57608638913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/75637649562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/62177885734.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 6

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_off00007ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCC 5204 bytes
SHA-256: 9a4160bf7390c6adb96ff7eadddfbfcbab7ea5c98db3bf528c47ac51497d08da
font_01_sfnt_off00008e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8C 10900 bytes
SHA-256: a88190a31cb4e3169256060843dab72463b00c9809afc72c23de6118d854f40f

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