Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d0d6cc9a984667…

MALICIOUS

PDF

38.5 KB Created: 2020-08-08 07:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4030d9f0db43f197aab435934ae1a6ea SHA-1: 728bda81dc3875bb00c9bbba56e2fb122f60ffd1 SHA-256: 24d0d6cc9a9846679227f0beff37ac6f90e0b3bef2b13b6e40ea4d462c93e9f4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=simple+present+exercises+pdf+test'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, also contains the primary malicious URL. The combination of these factors strongly suggests a phishing or redirection attempt.

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=simple+present+exercises+pdf+test
    • http://biwexije.rubiesgirlsclubs.com/uploads/1/3/1/4/131437736/zazimoligewuz.pdf
    • http://files.mdbusinessreview.com/uploads/1/3/1/3/131379340/c0abcb02.pdf
    • http://files.womensbalancehealth.com/uploads/1/3/0/7/130739212/1b7e5fa52.pdf
    • http://files.capetownwritersretreat.com/uploads/1/3/0/7/130738993/9099309.pdf
    • http://somufebi.spotlightingsoutheastchicagoandnorthwestindiana.site/uploads/1/3/1/3/131380213/fotulukik_luminuwowodi_zujinulosuv_nogeva.pdf
    • https://cdn.shopify.com/s/files/1/0451/9621/4423/files/calendario_anual_2020_para_imprimir_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6053/files/vokotama.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/javascript_timer_repeat.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/71127225614.pdf
    • https://cdn.shopify.com/s/files/1/0440/3003/4085/files/46194117016.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/92230783470.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/lesodolibugujojatas.pdf
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/74565938793.pdf
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/defagino.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/adirondack_chair_plan.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2651/files/5427166460.pdf
    • https://cdn.shopify.com/s/files/1/0427/6859/7158/files/dazolofusuxuganiruwaruz.pdf
    • https://cdn.shopify.com/s/files/1/0432/8688/8601/files/luxenowozegibafujug.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/classifying_triangles_and_quadrilaterals_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c05.bin
31af071bba2570f2ab9057eab30e0188754d3fc3d182af9c5c6ea71f93c7fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C05 4940 bytes
font_01_sfnt_off00005cb1.bin
34c2c47aa754bb2a58f052c2394a5c66ce683760cefebdb0cb65d30c34d03a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB1 10064 bytes
font_02_sfnt_off00007eca.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECA 4324 bytes

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