Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e110334091799a7…

MALICIOUS

PDF

43.0 KB Created: 2020-08-07 19:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4438f514b2e32540ca83a3c932221499 SHA-1: 320c596986c6220c6a673843da5e1807b5473c1d SHA-256: 1e110334091799a7d6fe07e21b5a31d2d0053a362ac31f7329c3efacd4faf869
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, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the embedded URLs, https://ttraff.ru/pify?keyword=blast+furnace+parts+pdf, is flagged as a known malicious redirector. The document body itself is largely unreadable binary data, but the presence of the malicious URL and the link farm structure strongly suggest a malicious intent, likely to lure users to malicious sites or to distribute further malware. No scripts were extracted from this sample.

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.ru/pify?keyword=blast+furnace+parts+pdf
    • http://files.spiritualself-inquiry.com/uploads/1/3/0/7/130776327/rijupas.pdf
    • http://files.gatheringofghouls.com/uploads/1/3/1/8/131871466/4517744.pdf
    • http://files.12monthbeauty.com/uploads/1/3/0/8/130874128/6301925.pdf
    • http://files.sanctuaryofpraise.net/uploads/1/3/1/3/131383825/vurojilubumibiko.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/gezupupawaluladeneberonag.pdf
    • https://cdn.shopify.com/s/files/1/0434/5679/0681/files/birrell_and_davies.pdf
    • https://cdn.shopify.com/s/files/1/0431/2511/2994/files/80184533763.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/pabozikojivatesebeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/vukoworasir.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/rabanenawuda.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/27426225988.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/30065928626.pdf
    • https://cdn.shopify.com/s/files/1/0440/7640/0792/files/26557687912.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/goraxarefupafafagukusa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31492874922.pdf
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/wovotutavozijulewakepo.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_off00006a72.bin
2c2821fcb905c682d7fe43b111822b02e9a1d734c6ca5b07085a892459405ad6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A72 5200 bytes
font_01_sfnt_off00007c32.bin
d6826edfcfedee80d2b7140d7981fdfe5fcc65dd2018eb671fe09a3df3d40bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C32 10340 bytes

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