Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d2158c33939bb5…

MALICIOUS

PDF

59.6 KB Created: 2020-08-24 08:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 468676526cf56c86e02c269dbdfb044b SHA-1: a8d9344c24b16daeb5ba093b95e51bb3f8f1a0cc SHA-256: 89d2158c33939bb5780c2e33b6648ad20d021aeae20cc8e26da3c5b49587c65e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=galdem+garms+size+guide', is designed to lure users to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded links pointing to various PDF documents, likely for SEO manipulation or to host further malicious content. No scripts were extracted, but the presence of the redirector and link farm suggests a phishing or social engineering attack.

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=galdem+garms+size+guide
    • http://files.ladyannacalypso.co.uk/uploads/1/3/1/1/131164093/1829200.pdf
    • http://zedibifu.millwoodchurchofchrist.com/uploads/1/3/1/1/131164250/740b33657adef.pdf
    • https://cdn.shopify.com/s/files/1/0435/8583/1080/files/ambani_songs_masstamilan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7241/3079/files/system_analysis_and_project_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/chiang_mai_tourist_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/4455/0294/files/colpitts_oscillator.pdf
    • https://cdn.shopify.com/s/files/1/0435/8458/5883/files/sekizaxinikojuxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/ashby_material_selection_in_mechanical_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/2539/8946/files/super_task_killer_free.pdf
    • https://cdn.shopify.com/s/files/1/0460/1400/5415/files/infographics_template_freepik.pdf
    • https://cdn.shopify.com/s/files/1/0438/4784/4000/files/vifojozipebiwisuraxutava.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/awaken_the_giant_within_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/20638631167.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3574/files/manual_of_clinical_microbiology.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094bb.bin
4f1bc126ea308f78cd0525991eadbd67966a0308b480f924428348b84134cfca
pdf-font-stream PDF embedded font (sfnt) at offset 0x94BB 4812 bytes
font_01_sfnt_off0000a50c.bin
6bd0b590634f25a192e6c4dbc5fe8dd02b7f641fa66972b62e7a17577d7117c6
pdf-font-stream PDF embedded font (sfnt) at offset 0xA50C 1796 bytes
font_02_sfnt_off0000addf.bin
1e96f4e6d41f9f512ba83dda22770dab112908ecdfe2ab55b9f3c76600bac772
pdf-font-stream PDF embedded font (sfnt) at offset 0xADDF 10864 bytes
font_03_sfnt_off0000d2d4.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D4 4324 bytes