Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2878dd2ced4ffe…

MALICIOUS

PDF

43.2 KB Created: 2020-07-31 23:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8309c54b8e975c0f277035d00f7e581e SHA-1: a74832a53a8cb75f8984602a8622b1931f9781c5 SHA-256: 7d2878dd2ced4ffe819f62cc7bf804e6ef7e4ef7e80a9c7d3ed23e3d33e1e6aa
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, specifically pointing to a lure for 'minecraft 1.6.4 mods'. The SE_CLICKFIX heuristic suggests the document attempts to trick the user into executing commands, likely to download and run a second-stage payload. The ML classifier strongly supports the malicious verdict.

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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=minecraft+1.+6.+4+mods In PDF document text
    • http://files.luisagonzalez-interiordesign.com/uploads/1/3/0/7/130775392/gotuj_zokafi_kabukejodorub.pdfIn PDF document text
    • http://files.arcdesignstudios.com/uploads/1/3/0/8/130874520/5469621.pdfIn PDF document text
    • http://files.minipiginfo.com/uploads/1/3/1/4/131410545/271772.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/nusene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/8899188675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/relixokutitubaridumagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/kazujojuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/daxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/zimipunijakotumekek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15843942414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/sofukubilotaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/13983234281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/64450372689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/libew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0755/6258/files/xevaxesibu.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_off00005d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2D 5252 bytes
SHA-256: b2b7a67a736b5887131e5f5c37faad1855122aa98d8c6aadfa90e015b23290b7
font_01_sfnt_off00006ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF7 10304 bytes
SHA-256: 573cafdbce9860d4f66e23270231bc883be6cc11f0e5846a7827c71f999aa520
font_02_sfnt_off00009213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f