Malicious PDF — malware analysis report

Static analysis result for SHA-256 32223ffec5ce93b9…

MALICIOUS

PDF

51.6 KB Created: 2020-08-28 11:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 838e5a1acf4bc98f78172c8c671a730e SHA-1: 35ad62c92dda2fe11890b05fd911015a2e291675 SHA-256: 32223ffec5ce93b9415005606e2e31e2b1cc31e36b6c2fd8a0d0e548146d6f80
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 'https://ttraff.cc/pify?keyword=npc+guide+dark+souls+3'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a lure to a malicious site.

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=npc+guide+dark+souls+3
    • http://files.shoploveis.com/uploads/1/3/1/4/131406433/sukuxevela-torat-suribu-gekogomozumaxak.pdf
    • http://files.athenianenterprisesllc.com/uploads/1/3/0/9/130969211/degolodawan_xugulomadukadu_pumipemigupoj.pdf
    • http://napunus.pittsburghcatchwrestling.com/uploads/1/3/1/6/131606055/ledaliwida-papabadidini-sovuliburatugus-losusalaxukalo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/donna_donna_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/4724/7263/files/84298046063.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3616/files/mahalaxmi_calendar_october_2020.pdf
    • https://cdn.shopify.com/s/files/1/0449/5910/5192/files/afro_cuban_grooves_for_bass_and_drums_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/nationwide_pet_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/6160/0668/files/49348090648.pdf
    • https://cdn.shopify.com/s/files/1/0433/3636/8283/files/kowaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/v2-_lcd_led_screen_panel_repair_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/zuzuwidugig.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/d_p_e_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6960/files/sears_riding_mower_parts.pdf
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/tofuvovevoba.pdf
    • https://cdn.shopify.com/s/files/1/0429/4030/1478/files/pingpong_root_5._1._1.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_off00008c01.bin
9fc799d61aa1eda885ba458d43b29fbcd5c38a81053032c40a4a589f44a2aa47
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C01 5440 bytes
font_01_sfnt_off00009e8f.bin
4a1b9e3b416c6b6cb6bd6908a532471c8bc253850d39ff2d3d8634ba7fa88dc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E8F 10236 bytes