Malicious PDF — malware analysis report

Static analysis result for SHA-256 af3c774166a32ace…

MALICIOUS

PDF

53.6 KB Created: 2020-08-01 21:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2b6d376b30e9a4bc38b4b102c5f1f68 SHA-1: d67fbbea19e719320b0da4c78dbb172a00976ccc SHA-256: af3c774166a32acef48f337e3e229a2f92e4b9866751a3fa5c29aab8a4ab2f6c
150 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.cc/pify?keyword=1994+ford+ranger+manual+transmission+fluid+type'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0431/6866/1670/files/62685278332.pdf'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to direct the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=1994+ford+ranger+manual+transmission+fluid+type
    • http://files.cvintegrativetherapies.com/uploads/1/3/0/8/130814118/detewulug.pdf
    • http://files.breakwaterharborbooks.com/uploads/1/3/1/4/131438069/fojeramiwedaparobafu.pdf
    • http://files.mycountrydanes.com/uploads/1/3/0/8/130874055/tuxojufolamuzalibip.pdf
    • http://files.holytrinityholmfirth.org.uk/uploads/1/3/1/3/131380345/xogibafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/62685278332.pdf
    • https://cdn.shopify.com/s/files/1/0438/3778/4229/files/leroparalavopefow.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/ravirifomunemezes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/92545968134.pdf
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/2004_jetta_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5110/files/.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/lovaliloresuva.pdf
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/66923055322.pdf
    • https://cdn.shopify.com/s/files/1/0432/0002/0635/files/jenugabeja.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/hesi_a2_secrets_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/mogowixun.pdf
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/29493271546.pdf
    • https://cdn.shopify.com/s/files/1/0434/6380/3046/files/devirarenadijuvujone.pdf
    • https://cdn.shopify.com/s/files/1/0433/6569/5638/files/vanilla_gm_commands.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_off00005ed4.bin
a2b30bb88200ed920aa102ed07a016502b63893b1bcad92b9542929d715a1036		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 5544 bytes
font_01_sfnt_off000071a0.bin
3d2714d26c84d4b42d92e0398c53b83f8d03a0ebf13531ada30de64d59100d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A0 15312 bytes
font_02_sfnt_off0000a0e8.bin
1f079267650ee1213ab733ea8477abdfb42e9f03adf07824247892e8a39fa66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E8 17520 bytes
font_03_sfnt_off0000ba99.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA99 4324 bytes

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