Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1295c4b86237af…

MALICIOUS

PDF

41.9 KB Created: 2020-08-10 00:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93b64630c985403b1206da8f6fc3ed90 SHA-1: 347f28b68ee49eb5056bef0259f42e6815eb4789 SHA-256: fc1295c4b86237aff772317075db5bbd90f6a574176d97da12a4ed51f43f3a36
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains text related to 'class 11 biology short notes pdf' and the malicious URL, suggesting a lure to trick users into downloading potentially harmful content. The presence of a malicious redirector link indicates a phishing or content-luring attack.

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.com/pify?keyword=class+11+biology+short+notes+pdf
    • http://memerodof.birdseywoodworking.com/uploads/1/3/1/6/131606407/nisiroxonume.pdf
    • http://files.intricatetaste.com/uploads/1/3/0/9/130969800/nemazexum.pdf
    • http://files.aperfectpairshoes.com/uploads/1/3/1/3/131379552/diwozixa.pdf
    • http://rogobove.thebirthyurt.com/uploads/1/3/2/8/132814930/nerasoxep.pdf
    • https://cdn.shopify.com/s/files/1/0440/3593/2310/files/upl_add_java_classes.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/jodisixoxanuronupabat.pdf
    • https://cdn.shopify.com/s/files/1/0431/5090/1402/files/xebetilivetig.pdf
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/javascript_string_to_lowercase.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/62936786196.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/85488188943.pdf
    • https://cdn.shopify.com/s/files/1/0439/3477/7499/files/70835923947.pdf
    • https://cdn.shopify.com/s/files/1/0434/7917/1222/files/giborofoxoxebimogidisiju.pdf
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/voduvux.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/rumusexif.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/icao_annexes_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sigejorivuzogekos.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/calculus_early_transcendentals_rogawski.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_off00006516.bin
fd66d82ae15aea8e222f5a94d55e5b235f0a08eeb423c83fbc1336a9773f80b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 5500 bytes
font_01_sfnt_off000077c8.bin
1e766a80e7f07009ddeacc7185579edbd51e539a5caf1bdd7ef515915f1cf693
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C8 10200 bytes