Malicious PDF — malware analysis report

Static analysis result for SHA-256 389bbcffa7c364a1…

MALICIOUS

PDF

41.0 KB Created: 2020-08-10 10:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e2f42c7a049341bcb007d8cfa5be463 SHA-1: 219ef2c0bb892403998d5abc8bc89912c0838444 SHA-256: 389bbcffa7c364a12a960a794a6e51adaf4a79540ca25591cf3805565551c4f3
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=budapest+tourist+map+pdf', which is designed to lead users to malicious content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains references to 'Budapest tourist map pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting users through the ttraff.cc domain.

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=budapest+tourist+map+pdf
    • http://files.johntroypainter.com/uploads/1/3/1/8/131856257/af0f493.pdf
    • http://files.hafcafproductions.com/uploads/1/3/0/7/130776079/deramatozipe-zejuwutebekaxi-wukojip-gowofoguvi.pdf
    • http://files.hvtelovestudio.com/uploads/1/3/1/6/131606101/jijesugigukododi.pdf
    • http://files.isetnb.com/uploads/1/3/1/8/131860378/rimoluvedebede.pdf
    • http://files.buchspielerrecords.com/uploads/1/3/0/8/130873794/511a5f7151e9.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/vajeselixusituxowari.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0437/8820/6238/files/balance_druid_bis.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2243/files/70128161770.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43127542751.pdf
    • https://cdn.shopify.com/s/files/1/0434/0813/0197/files/derazorewetetesurobatafux.pdf
    • https://cdn.shopify.com/s/files/1/0432/1781/3661/files/55058822715.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/kixutaxibarogunapuluvoni.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/150740059.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/free_bearing_interchange_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/poe_leveling_uniques.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/24572160374.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/85338384443.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_off00006337.bin
4192288ec79e0fa57e0f64f1cbb7b93755bbd4748617280c36b90e356ec758df
pdf-font-stream PDF embedded font (sfnt) at offset 0x6337 5204 bytes
font_01_sfnt_off000074da.bin
16bb0da6e49995eb8ce6206ac753bf0d22f5cc65f1d922715c79bd8e39b15602
pdf-font-stream PDF embedded font (sfnt) at offset 0x74DA 10064 bytes