Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d341eb3bb072756…

MALICIOUS

PDF

40.7 KB Created: 2020-08-10 05:38:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 865163a46e02f1251439d31ce22897ef SHA-1: adaeb5dd2b417b2d2674c7454b811698e6b2e618 SHA-256: 7d341eb3bb072756978466a2e27eaae3e0f267c97431eafea3aae31189eef8ac
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing a book PDF and includes the malicious URL. The primary attack pattern involves luring the user to click on the malicious link, which is likely part of a phishing or redirection campaign.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=seeing+is+believing+book+pdf
    • http://files.ashlandcountytowninsurance.com/uploads/1/3/0/8/130873851/3588413.pdf
    • http://files.living-practically.com/uploads/1/3/0/7/130738974/475136.pdf
    • http://files.ccdtc.org/uploads/1/3/1/6/131607029/6760730.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/viwisigosogakiwexisewa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/60493070242.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/heroic_kil_jaeden_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/nipowirolusogapekirim.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/memedamenil.pdf
    • https://cdn.shopify.com/s/files/1/0431/7836/0987/files/pibusezesepodorugovebute.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/48234165952.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/lodukikoxewisel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54101174921.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_off0000621e.bin
76702e3f272d95a1cfb2b23d135412362090795cf2bf9e50bd1ef150fd7bf44e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621E 5268 bytes
font_01_sfnt_off0000742a.bin
0ffb5623d90d40682d5c6dafa0c96ab21b143fa0874ef9dad5a920021b2de92c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742A 10012 bytes

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