Malicious PDF — malware analysis report

Static analysis result for SHA-256 4251352bce0ffba9…

MALICIOUS

PDF

47.8 KB Created: 2020-08-15 08:37:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07adf6d23e3b4c9cb88bd747b5e8243f SHA-1: b54ab0cf72ee922da8de3e7c9eb44d70fa521aac SHA-256: 4251352bce0ffba97b98e3d8d8a547f70dfa4ebeb73376712e056a70f437dfed
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wb?keyword=3d%20scroll%20saw%20patterns%20&%20techniques.pdf'. This URL is presented within the document body, likely as a lure for users to click and download something malicious. The presence of a 'download button' heuristic further supports this social engineering tactic. No scripts were extracted, limiting the analysis of the payload.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=3d%20scroll%20saw%20patterns%20&%20techniques.pdf
    • http://files.livbeauty.net/uploads/1/3/1/3/131378779/de637815dd1.pdf
    • http://files.sandiego173rdairborne.org/uploads/1/3/1/3/131380627/6856790.pdf
    • http://files.mattcarmean.com/uploads/1/3/1/1/131164231/digabak-fatitarib.pdf
    • http://files.kawvalleyhearing.com/uploads/1/3/0/7/130775784/relulof.pdf
    • http://files.olilazarusphotography.com/uploads/1/3/0/8/130814032/f916b15ce998.pdf
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/android_map_network_drive_as_local_folder.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/dejojonimaxisonix.pdf
    • https://cdn.shopify.com/s/files/1/0429/1900/2279/files/bible_study_topics_for_youth.pdf
    • https://cdn.shopify.com/s/files/1/0443/8504/2598/files/spatial_data_analysis_in_ecology_and_agriculture_using_r.pdf
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/75469399445.pdf
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/77905288541.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/81457885661.pdf
    • https://cdn.shopify.com/s/files/1/0440/8141/4296/files/10637489720.pdf
    • https://cdn.shopify.com/s/files/1/0450/4076/3030/files/kk_slider_soundfont.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/52596252102.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/4197887659.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/effortless_mastery.pdf
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/82702359986.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_off00007cc4.bin
456771de777b04855ccf81316c71fb42287ac9dedf5fd6192a0751882bfde275
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC4 5228 bytes
font_01_sfnt_off00008e9c.bin
8092cbbf9d7f5b101f24e579ab84e30688c3f4f535380d704d75bb01706f8e32
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9C 10364 bytes