Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a390c0640e0086b…

MALICIOUS

PDF

73.7 KB Created: 2020-08-07 23:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44648401de132421cabc4a6b43d2a593 SHA-1: 6e4174fd5b6ab4ab695daba418603b4c1c49bf26 SHA-256: 1a390c0640e0086bf2c0789f83811e0f1ee5d6777d2ef3b4b6c960d2fba12ae9
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=anne+with+an+e+book+pdf', suggesting a lure related to a book download. The primary intent appears to be redirecting users to malicious infrastructure.

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.cc/pify?keyword=anne+with+an+e+book+pdf
    • http://files.riversandranch.com/uploads/1/3/1/3/131379434/fbe8143dd0f448d.pdf
    • http://files.grandmassoapandstuff.com/uploads/1/3/1/4/131436956/nopevifinojategum.pdf
    • http://files.solasprojects.com/uploads/1/3/1/6/131637014/7831429.pdf
    • http://nuvijuxo.idealcitydesigngroup.com/uploads/1/3/1/8/131856333/tejuwizebiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/active_discord_servers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/zemaxakubefefugabanit.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/39488016708.pdf
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/meniwafu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/58710707769.pdf
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/rimworld_mod_load_order.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/42835913132.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/humphreys_introduction_to_lie_algebras_and_representation_theory.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/jetuluzarilevuzedabema.pdf
    • https://cdn.shopify.com/s/files/1/0430/7193/0529/files/50944386539.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/99097078910.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/909040323.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c62b.bin
91e399e77926c5c2f054a9c2f379aa39929310222e749bae759a923bd7b88df9
pdf-font-stream PDF embedded font (sfnt) at offset 0xC62B 8744 bytes
font_01_sfnt_off0000e345.bin
7b3c4da023356d2268af60d0c1b54fb49719c9b2c1c29120698d7126babbb91f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE345 5108 bytes
font_02_sfnt_off0000f4b9.bin
8d0ddf44bff4e69df24e7e8ee9e2e8eb513098cebd54d6d5ca6e5e4bac0c63aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B9 10552 bytes