Malicious PDF — malware analysis report

Static analysis result for SHA-256 77f4d5e230a9c079…

MALICIOUS

PDF

37.7 KB Created: 2020-08-18 21:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59c520af5ca4beb5d7f3092dc70d046b SHA-1: 146daad6130d9574ba576b33221a8ac7b49de1b5 SHA-256: 77f4d5e230a9c079eead11e9d5bcc3f7d5c1f619dab3f8ce3541c92c58feadc1
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL itself. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

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=you+are+mine+church+song+sheet+music
    • http://kugigo.deirdreedsign.com/uploads/1/3/0/8/130813528/ponem.pdf
    • http://files.demornewarrenddub.com/uploads/1/3/1/4/131409170/dakodup-simegi.pdf
    • http://files.kobefeelingdolls.com/uploads/1/3/1/8/131856956/3bf25a632.pdf
    • http://files.laedgefilmawards.com/uploads/1/3/1/6/131606065/4827369.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/printshop_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/9021334326.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/flanged_butterfly_valve_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0432/7194/6396/files/20567817619.pdf
    • https://cdn.shopify.com/s/files/1/0435/0106/0262/files/egyptian_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/albacea_peru.pdf
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/rome_total_war_wiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/fedulumid.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/16680698192.pdf
    • https://cdn.shopify.com/s/files/1/0430/5666/0633/files/kisutakotoxerunawam.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/42454268104.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_off000053a1.bin
c3ae926cebeee8dd83ddf1b7bf577db5f1679f5ff84096ac937ca93ce87ca861		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53A1 5140 bytes
font_01_sfnt_off000064e9.bin
50c0f297344efb499254bd783656abb868b40959c436957a7d86c014131b6f4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E9 10372 bytes

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