Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cf3f827c0c194f…

MALICIOUS

PDF

52.3 KB Created: 2020-08-19 23:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43f028de25a137c15ebf35fcd510bab2 SHA-1: 05dc7be16b9204465da3e651325e27cdb18a7cb3 SHA-256: 33cf3f827c0c194fe655331cfc57ee47124e0aafcff75019d52bacb3a0ae1f0f
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-themed and point to benign Shopify URLs, but one critical link redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=best+video+editor+apk+mod', which is flagged as a malicious redirector. This suggests the document is a lure to direct users to malicious content, likely a phishing page or malware download.

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=best+video+editor+apk+mod
    • http://files.radburn.org/uploads/1/3/0/8/130814234/e08f4.pdf
    • http://fakalo.simply-scripted.com/uploads/1/3/1/4/131437423/domukad-xepawuwife.pdf
    • http://zomaseg.roogulli.com/uploads/1/3/2/6/132695278/6971349.pdf
    • https://cdn.shopify.com/s/files/1/0431/5499/7402/files/tutorial_corel_draw_x5_desain_kaos.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/22852976807.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/advocare_cleanse_phase_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/luzag.pdf
    • https://cdn.shopify.com/s/files/1/0429/3014/3395/files/dizijamuvejetejuziwex.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/fejik.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4736/files/noxixokorizujugirug.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/ginukiruranerevok.pdf
    • https://cdn.shopify.com/s/files/1/0451/0603/6899/files/aseptic_and_antiseptic.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0431/6466/3967/files/macroeconomics_aggregate_supply_and_demand.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/86555382810.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_off0000664b.bin
76a753e24b1c6eb2ea72b2f746bbb9adc2e093294f3cd17dca6dae5c62575de9
pdf-font-stream PDF embedded font (sfnt) at offset 0x664B 5248 bytes
font_01_sfnt_off00007812.bin
b5548594dcf62c02d0190e3a1312f3be40a03717def5d1d0e7ff622042f3ff43
pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 9000 bytes
font_02_sfnt_off00008a30.bin
352c8e13db7c89812418c206f503c53bb9c0f887f48a2021a7af765799ffb7fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A30 10532 bytes
font_03_sfnt_off0000ae8d.bin
59865fb8655877cbbe25ae72ccf2fd28f7fb39ed592ad147577ef562668e259e
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE8D 16128 bytes