Malicious PDF — malware analysis report

Static analysis result for SHA-256 57a34fdc13b24db1…

MALICIOUS

PDF

72.3 KB Created: 2020-08-20 01:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e667690203e7a4f211593c3e591e8bc SHA-1: 322128dc10d68dc6144a4fa1d876e1213f547668 SHA-256: 57a34fdc13b24db13865cc07aa1a4a806b22ea73616444fbb8a06f895be31bf0
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, with a critical heuristic identifying it as a PDF link farm. One of these links points to a known malicious redirector. The document body contains the URL 'https://ttraff.ru/pify?keyword=forcibly+guided+contacts+mechanism', which is also flagged as malicious. This suggests the document's primary purpose is to lure 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.ru/pify?keyword=forcibly+guided+contacts+mechanism
    • http://xulup.1corinthiens15.com/uploads/1/3/0/8/130874113/lokuzanosafajovowok.pdf
    • http://bidez.skyfieldtropical.org/uploads/1/3/0/7/130776257/43f593b8.pdf
    • http://files.missourimidwivesassociation.com/uploads/1/3/2/6/132695200/zumod_xatejepijokede.pdf
    • http://files.gcspatriots.org/uploads/1/3/0/7/130776099/e79ae.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6933/files/sojuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/geragebitatusisugoguze.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/tamil_play_movies.pdf
    • https://cdn.shopify.com/s/files/1/0436/4101/2377/files/misofekuvafa.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/47688741190.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/64698328533.pdf
    • https://cdn.shopify.com/s/files/1/0439/1524/7771/files/multiplication_worksheets_grade_8.pdf
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/android_binding_default_value.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/virgil_aeneid_latin.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/herr_biedermann_und_die_brandstifter.pdf
    • https://cdn.shopify.com/s/files/1/0434/6223/0181/files/97765000385.pdf
    • https://cdn.shopify.com/s/files/1/0434/4997/4946/files/discord_text_formating.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/1/0431/0571/4338/files/vi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfeb.bin
952f56bca2ff8aadd93d986b2bbd0ec1ec460507a99d986cc91566ff953c1d96
pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEB 5432 bytes
font_01_sfnt_off0000e233.bin
be7256e6be514e500f01d07e4e18a50c39ef64b2e7bb0ae9ad8a5d68c9e31fbe
pdf-font-stream PDF embedded font (sfnt) at offset 0xE233 10348 bytes
font_02_sfnt_off000105a1.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x105A1 4324 bytes