Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a97559e6891389…

MALICIOUS

PDF

42.4 KB Created: 2020-08-24 15:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5d3dd3beafd626c8b93d9cb54de583a SHA-1: 6d10f2e4e48fd30935f7d4e699e55fe5abbdd27c SHA-256: 49a97559e68913892fb1ec3889353f35689cf0319f51ed22b4dc576bb7204713
128 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects through ttraff.com, a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'K7 antivirus premium' and a URL that appears to be the same as the malicious redirector. This suggests a social engineering lure to trick users into downloading potentially unwanted or malicious software. No scripts were extracted from this sample.

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=k7+antivirus+premium++for+windows+10
    • http://files.sdg.services/uploads/1/3/0/9/130969300/posajefevagobir.pdf
    • http://tonow.oldschoolsailing.com/uploads/1/3/1/6/131606295/zonijitekojo_xasonitamet_gilapuzenilekev_muraf.pdf
    • http://dakox.lovemyfinds.com/uploads/1/3/1/4/131438234/gigibam.pdf
    • http://files.jaredkrout.com/uploads/1/3/1/4/131409309/4c36b6b748d65.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/unity_camera_script.pdf
    • https://cdn.shopify.com/s/files/1/0437/9181/0717/files/medup.pdf
    • https://cdn.shopify.com/s/files/1/0431/7652/5988/files/mijamidusubo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/asme_section_viii_division_2_part_5.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/american_airlines_application.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/witinaleroxelu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/make_something_up_chuck_palahniuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/xexetigasuvobizina.pdf
    • https://cdn.shopify.com/s/files/1/0432/3157/6226/files/chemical_bonding_notes.pdf
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/71922107174.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/davorurotewoduw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6080/5280/files/51908156351.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_off000064b9.bin
67ddfb3825a6d5e85c2c0f8b25e43d4fbd961d7b253cc34faf0ab1611094c41c
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B9 5552 bytes
font_01_sfnt_off000077a6.bin
6e7191e055f2ea5c31c8fc30ff86926d340ae4a7b49dbe988b09eb5164044de5
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A6 10872 bytes