Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4c44d81010f3ea2…

MALICIOUS

PDF

47.2 KB Created: 2020-08-17 11:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7aaebac34833e739db2bd7ffb544bca1 SHA-1: fc1c110c4cd58bc0149060d106feeebd34795ffc SHA-256: a4c44d81010f3ea2966c7da518b51b5ac61da6fbba71544db6ad896c1fb03193
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=uc+browser+opera+mini+free'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many hosted on Shopify, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=uc+browser+opera+mini+free
    • http://dutisu.pagesustainability.com/uploads/1/3/1/8/131856917/3137921.pdf
    • http://jodigop.bluesteeltm.com/uploads/1/3/1/4/131482952/rorosamuped.pdf
    • http://files.aaronflaaen.com/uploads/1/3/2/6/132682802/ledaja.pdf
    • https://cdn.shopify.com/s/files/1/0441/0349/9928/files/vakevekivilogerolog.pdf
    • https://cdn.shopify.com/s/files/1/0437/9846/2624/files/60105182746.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/75882890423.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/bhagwa_rang_dj_mein.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/67447173440.pdf
    • https://cdn.shopify.com/s/files/1/0451/1285/2632/files/bilstein_shock_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/mepotaxupofaragefekakewiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0906/files/format_usb_key_ntfs_allocation_unit_size.pdf
    • https://cdn.shopify.com/s/files/1/0430/5430/1338/files/minecraft_seed_map_ps4.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/91603536789.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/gakutadadilegidulexajelum.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/english_words_with_telugu_meaning.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a30.bin
4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A30 6588 bytes
font_01_sfnt_off00007aa9.bin
49a4471b352791b0fb58e0f37007955c5c62ac0902bcb0bcae11b0c058fbff4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA9 5352 bytes
font_02_sfnt_off00008ccd.bin
0a615d33e505780a104c98fe309572b501a94132bc3e79a07fdd4a3cba5249c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCD 10108 bytes