Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44d53b0d05f3de8…

MALICIOUS

PDF

45.8 KB Created: 2020-08-17 14:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5953257302f60c1052225199b392827f SHA-1: 081dc83c644b8bfee9033957012d3307b24df613 SHA-256: f44d53b0d05f3de809312fa0400a8407fb1749d90c169a861a4ec871321366ce
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL pointing to `ttraff.com`, which is flagged as malicious. This suggests the primary goal is to redirect the user to a malicious site, potentially for phishing or to download further malware. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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.com/pify?keyword=guidelines+for+lectors+in+the+catholic+church
    • http://files.fireecologyandbiodiversity.com/uploads/1/3/1/8/131871618/lamamujudonin.pdf
    • http://files.camrapenn.org/uploads/1/3/0/7/130775583/437717.pdf
    • http://files.corchgeckos.com/uploads/1/3/0/7/130738889/29e4be4b59a.pdf
    • http://files.lakeantoine.org/uploads/1/3/2/6/132680955/pinimidifomuteg_pivujixixafiw_tiraj_vinupu.pdf
    • http://visanisi.tyburke.net/uploads/1/3/2/3/132303163/ninokelapovagaj-topaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/sevidiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2254/files/71676863813.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5502/files/la_nueva_defensa_fiscal.pdf
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/jeremiah_clarke_trumpet_voluntary.pdf
    • https://cdn.shopify.com/s/files/1/0428/4550/3655/files/physical_chemistry_atkins_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7975/files/3ds_virtual_console_cia.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/76516963053.pdf
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/bihar_board_admit_card_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0450/4734/9406/files/convert_file_to_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/5498643459.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/jkuat_attachment_report.pdf
    • https://cdn.shopify.com/s/files/1/0444/6869/9303/files/allen_major_test_series_2020_download.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_off00007548.bin
2a320f06d0a42ef7a18590da5c22e7835af6898cbf593c0ce51d01523631d9fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7548 5140 bytes
font_01_sfnt_off000086b2.bin
3075cc3eebd4dab10419998396352d5fc25fbe2833fdcc1d5b22b91fd52489fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x86B2 9768 bytes