Malicious PDF — malware analysis report

Static analysis result for SHA-256 d23d10fe1de55fef…

MALICIOUS

PDF

53.4 KB Created: 2020-07-28 21:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57e4e0045476c6525828636f00422fd1 SHA-1: 28d0c8738407f7300a1cd84738d3d4a8487a0214 SHA-256: d23d10fe1de55fef61bce72a265b4c581a80cbe8691c61b5d117b6165fed8871
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'project kick off template ppt'. The presence of a visual download button further supports a social engineering pretext. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=project+kick+off+template+ppt In PDF document text
    • http://files.lemonteilrevolution.com/uploads/1/3/0/7/130739678/dabimikanupitiv_fegowojidomet_mixufudap_pasuf.pdfIn PDF document text
    • http://files.aroundthepros.com/uploads/1/3/1/4/131406841/jotozanofeguxujep.pdfIn PDF document text
    • http://files.greensouthirrigation.com/uploads/1/3/2/3/132303009/gudukano.pdfIn PDF document text
    • http://files.piecesearlylearning.com/uploads/1/3/1/4/131454766/xezuposuwafilaw_larodu.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/1/0432/1381/5966/files/38274350279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/nofizoditosiravobijefujed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/85044640251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/84619091127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/12936331085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/27657067032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/96008754415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/zuneratepobamuboxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/puxolujim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4507/5609/files/94681647244.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_off00008cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAD 4808 bytes
SHA-256: 593e8f181df272a57868273b10fd6dab03db88134496da823438275cc0631c7e
font_01_sfnt_off00009d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D02 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000a58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA58F 10204 bytes
SHA-256: dc4006e63600ae8fcc58717ac79e4e0cdbd6e19e482940f3e9f5adecc56ca250