Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c8fc8545f313a2…

MALICIOUS

PDF

53.3 KB Created: 2020-07-21 23:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f816031979e04e498cbe2b1bbdbbdc5 SHA-1: 7f78f03b1c32d4e0f7fc42153479cf5067909aa7 SHA-256: 89c8fc8545f313a2094b7ccc0247672e433934bae8c7e24906bd8723b79bc701
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is disguised as a link to an academic PDF, a common lure for phishing or malware distribution. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to a malicious payload or phishing page.

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=developmental+psychology+childhood+and+adolescence+8th+edition+pdf
    • http://files.carneysbltavern.com/uploads/1/3/1/1/131164011/venuzefesip.pdf
    • http://files.midwifemaddy.com/uploads/1/3/1/4/131454172/8e90248d1378d1.pdf
    • http://files.pemmensgolf.net/uploads/1/3/1/3/131379612/febokibilodirina.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/18615205606.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/zupedupunakupewirejaduri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sozolomunegodufedawugiwe.pdf
    • https://nikiruweti.files.wordpress.com/2020/06/tinikesowerakewiku.pdf
    • https://tagojuk.files.wordpress.com/2020/07/vetazezilenoron.pdf
    • https://voluvatoru.files.wordpress.com/2020/06/febupawusage.pdf
    • https://zonivase.files.wordpress.com/2020/06/26933620544.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/41257664347.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/70231427808.pdf
    • https://cdn.shopify.com/s/files/1/0432/0627/9323/files/49739808443.pdf
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/89808800309.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/dadubilemorasaxuwotibiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/pebone.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/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sozolomunegodufedawugiwe

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000702a.bin
d9eb4a6120ea016b30114cb131a3221ed83c26ec4383e7d40e50d43a01dc9751
pdf-font-stream PDF embedded font (sfnt) at offset 0x702A 2864 bytes
font_01_sfnt_off00007a5c.bin
e2d15410c10ce7a32d63d5d51dff611166f4aec742e7152041558cebf6f3a18d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5C 5616 bytes
font_02_sfnt_off00008d57.bin
08eb9aaa0c109b0744883bf78fca01e57f837ffeeefe019074f0da63109300e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D57 11352 bytes
font_03_sfnt_off0000b19e.bin
55d5123ea2e30bb0b6c65147a9271c01f8e2f7536e5e1d4b1c7059638f0fddb0
pdf-font-stream PDF embedded font (sfnt) at offset 0xB19E 16092 bytes