Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ff932e9fb70968…

MALICIOUS

PDF

40.2 KB Created: 2020-08-03 15:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 999670e5821ae8b21443f063e35a96ad SHA-1: ee3bf96e99dca58c1f01d37e81e2fdb9e41ebb1a SHA-256: 89ff932e9fb709686ec16f89f4f73ceb482c2e56ff9a56fdccbf223acc111e40
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body includes text suggesting a download lure, and the presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports this. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The file also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic redirection.

Heuristics 4

  • 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.
  • 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
  • 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=collocation+dictionary+pdf+free+download
    • http://files.marisamsorce.com/uploads/1/3/0/7/130738971/lokobikaso-jimusisevos-suvekik.pdf
    • http://files.franklalumia.com/uploads/1/3/0/7/130738836/fa74c426e631ea4.pdf
    • http://files.hr-transparency.com/uploads/1/3/2/6/132695714/1902794.pdf
    • https://cdn.shopify.com/s/files/1/0434/7786/0516/files/90842742331.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0328/files/xezezopoben.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/81997774704.pdf
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/minecraft_decay_enchantment.pdf
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/31356557452.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/44072855322.pdf
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/ymca_new_bedford.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/fagemixotewina.pdf
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/6786011236.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/wefapotexadepivekirijez.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/maguseperutimiru.pdf
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/1712280030.pdf
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/sojisedinizuxopazanozapaw.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb3.bin
6230651607071a3f54257f1110b317e9b06ef23c0bb9392c52786914a1eb9e4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 5072 bytes
font_01_sfnt_off0000701b.bin
47952100a75e253e4cf253bfc24fbd3384e8ccf5844fa45f80dd6de7970aa12e
pdf-font-stream PDF embedded font (sfnt) at offset 0x701B 10544 bytes