Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0932a31736b6c47…

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 13:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8716ba07061afdfeb649b60d530de8cb SHA-1: ed47a236b9076dfec3e96d4384ee16807ea9f279 SHA-256: c0932a31736b6c47b3be8fcd4c9b62ea9b826ef9008fdf8e88ceaf8de22b4684
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, a technique often used to create SEO poisoning or to distribute malicious content. One of the embedded URLs, 'https://ttraff.com/pify?keyword=cours+automatisme+industrielle+pdf', is flagged as a malicious redirector. The document body itself is largely unreadable binary data, but the presence of the malicious redirector and the link farm strongly suggest a malicious intent, likely to lure users to phishing or malware sites.

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=cours+automatisme+industrielle+pdf
    • http://files.jessicakatzman.com/uploads/1/3/0/7/130739415/fufilugu-luvezekidodu-sabukufisepomir-gubumi.pdf
    • http://files.positiveposturenz.com/uploads/1/3/1/4/131483550/sivaf_polatafi_zuwovil.pdf
    • http://files.acjs-mws.org/uploads/1/3/1/3/131379134/104b8f3f.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/85548202705.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/jojeruvagoxexifurudode.pdf
    • https://cdn.shopify.com/s/files/1/0437/1379/0106/files/ubuntu_14._10_sources._list.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/poxalofeximoji.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/jabokekuzaxuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/koxanokewegonex.pdf
    • https://cdn.shopify.com/s/files/1/0432/3183/8368/files/thomas_crown_affair_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/40553532515.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/miwiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/stock_market_basics_for_beginners_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/37208624682.pdf
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/wutele.pdf
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/anti_bullying_essay.pdf
    • https://cdn.shopify.com/s/files/1/0432/8233/3851/files/princeton_review_new_sat_practice_test.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_off0000744a.bin
237e5e661b3fea0e4fa589f616873b009ebafc5fc6fa0b1b52874e3fcd7dede6
pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 5092 bytes
font_01_sfnt_off0000857e.bin
aeb4a2c26d5c6fa89ca4d97da7dca38724d3bf40efb13c6618900b5259fc6297
pdf-font-stream PDF embedded font (sfnt) at offset 0x857E 10160 bytes