Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d350092faf26259…

MALICIOUS

PDF

57.6 KB Created: 2020-09-06 13:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70806c225f07a482179e0e13b96a90c0 SHA-1: 2796463b30f93587a71b3aadd48545fe43183d35 SHA-256: 1d350092faf26259bf3270997508704fec66acfb9e5f43bb8a755a46b72020fc
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.me/pify?keyword=graphing+quadratic+functions+worksheet'. This URL is likely used to redirect the user to a malicious site. The document also contains a PDF link farm heuristic, indicating a large number of external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.

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.me/pify?keyword=graphing+quadratic+functions+worksheet
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/sajefubexak.pdf
    • https://cdn.shopify.com/s/files/1/0436/3157/5198/files/oracle_database_11g_installation_guide_for_aix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/95756456893.pdf
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/younger_than_springtime_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/3891/4213/files/duxavosigamezefiko.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1111/files/allegiant_full_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1195/files/ark_survival_evolved_mobile_apk_aptoide.pdf
    • https://cdn.shopify.com/s/files/1/0428/7486/3772/files/atomic_orbital_hybridization.pdf
    • https://static.usrfiles.com/ugd/8a419d_bddc5f384b254d5e89f2414c7697f139.pdf
    • https://static.usrfiles.com/ugd/268ab1_0e769450eb00490a903dec530bd9cd5d.pdf
    • https://static.usrfiles.com/ugd/fd3290_a332fa21b3224ec7925e8974fe7a697c.pdf
    • https://static.usrfiles.com/ugd/7d2910_8d83c231ddcd4c63a2318a07236bd57c.pdf
    • https://static.usrfiles.com/ugd/f9d4cd_aa16adb03e04468fb4c1b6e563570491.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_off000097dc.bin
dd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97DC 2828 bytes
font_01_sfnt_off0000a1d6.bin
4a7183d9274205a0c2eac29309aed12d21a3ebe4ace1fe8283f51fdedc9302e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D6 5700 bytes
font_02_sfnt_off0000b544.bin
333126d9d4fb288c0b717ba7a9c8eb27975b41a118f7bf844725fcaa98c6d9d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB544 10000 bytes

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