Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a19058ec0e534a…

MALICIOUS

PDF

66.9 KB Created: 2020-09-20 13:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f05d757a766f4bb37faa830e5dee5ee SHA-1: 48d2624e35be19f8cc0e16c7123ae21f1720d8f5 SHA-256: a2a19058ec0e534a54be3bb3d1904c2446c8eb7d6cc6d0d416777955bbea2869
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=unit+6+chapter+18+viruses+and+bacteria+answers'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of a PDF link farm heuristic further suggests a malicious intent to distribute links.

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/wix?keyword=unit+6+chapter+18+viruses+and+bacteria+answers
    • https://cdn.shopify.com/s/files/1/0447/4889/8458/files/3431667982.pdf
    • https://cdn.shopify.com/s/files/1/0435/5384/9499/files/72859574554.pdf
    • https://cdn.shopify.com/s/files/1/0462/7087/3762/files/chrome_offline_installer_msi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0111/0940/files/48789646987.pdf
    • https://cdn.shopify.com/s/files/1/0483/8948/8792/files/lincs_vocabulary_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/artificial_intelligence_in_agriculture.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4534/files/2109434174.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/63040067338.pdf
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/coulombic_attraction_answer_key.pdf
    • https://64ba299f-7b06-4285-af20-ce12427a5a15.filesusr.com/ugd/d2057d_70c8c9194b984a1593124b11e411eb51.pdf?index=true
    • https://70f61415-854f-47bb-93c8-9bb6ee290bd9.filesusr.com/ugd/e2c6c1_0a27a7926c454e319fdf82818ad068bf.pdf?index=true
    • https://3c30db5b-6ef9-4dc2-b2ee-9272075fc109.filesusr.com/ugd/df4650_bc7121b7f99d4dc8bbf3746a10e87a32.pdf?index=true
    • https://e75e4d5f-629b-45c3-875a-b8a73a598c87.filesusr.com/ugd/1b0481_d57001b406dd44589f80ab8f579385af.pdf?index=true
    • https://33fa6857-0fa2-4cfe-ab5f-140bbeb3f0f0.filesusr.com/ugd/c63dba_e0fc6fc928bf4375a67e366bc904ea48.pdf?index=true
    • https://f4ce190f-62ea-48c7-addf-60a32b07cce6.filesusr.com/ugd/9ea9b6_82b532ec1d3c48c9b6b7703ab3a929f1.pdf?index=true
    • https://706bf9f3-df4b-4280-9d2d-8e8e2c137bae.filesusr.com/ugd/c8df25_f850c9e1fc7e4e9c8511e6373869f226.pdf?index=true
    • https://e5b514d8-ff53-499b-8eac-5db398a93f57.filesusr.com/ugd/b7ab08_0b8fe039e0984689958871ba86f3767a.pdf?index=true
    • 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_off0000a60b.bin
702a904c5ad91d03e1e6659782b4accffcdcdbbe62764333a5d5a0d17ac8f524		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA60B 5812 bytes
font_01_sfnt_off0000b9e6.bin
46770683904e195e3c338788ddb17511822d7984bda8782adec3bb8d6352d084		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E6 14884 bytes
font_02_sfnt_off0000e824.bin
aca9d55988c6676475e3b08f81553e0332b16fe059812fe008bdba06dc22cfc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE824 16316 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.