Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d85b39a4df6df90…

MALICIOUS

PDF

40.9 KB Created: 2020-08-13 03:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 492ca24bfcf98c9e21e4426745719ab3 SHA-1: 23c4f767b7ac1373041566dd919558a90016ff1b SHA-256: 8d85b39a4df6df90bef37d45576381dff395ff8eeaec1b36f8be6e64df08834f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One of the primary links, identified as a malicious redirector, leads to 'ttraff.com'. The document body, though partially corrupted, contains text suggesting it is a 'current affairs pdf in english', likely a lure to entice users to click the malicious link. 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.com/pify?keyword=adda247+monthly+current+affairs+pdf+in+english
    • http://pinidum.thetreatmentcentersinc.com/uploads/1/3/2/8/132814930/3976875.pdf
    • http://files.mineralhillsworkshop.com/uploads/1/3/0/8/130874012/lobonuxez.pdf
    • http://files.fudallytackleco.com/uploads/1/3/1/4/131453283/3070793.pdf
    • http://files.plainonpaper.com/uploads/1/3/1/3/131383720/tobape-jibokitemas-xovasivun.pdf
    • http://files.imaginesew.com/uploads/1/3/0/8/130874523/34654a74beb.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/canon_lide_300_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/dalubidirewij.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1461/files/slam_by_walter_dean_meyers.pdf
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/mock_poll_certificate_annexure_14.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/jenirefekevepafuvazamitew.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/bafebosututebudus.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/89657027666.pdf
    • https://cdn.shopify.com/s/files/1/0433/7490/3452/files/50830059468.pdf
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/belajar_excel_pemula.pdf
    • https://cdn.shopify.com/s/files/1/0436/2685/6610/files/cooking_recipes_bengali_language.pdf
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/neurofibromatosis_tipo_1_y_2.pdf
    • https://cdn.shopify.com/s/files/1/0438/1173/3664/files/juderikovatekarevis.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/11932551494.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_off0000602c.bin
61ad7959ccf3a24e0e2a321417f7f35a5187acc8aa8058649e8ab008dee4f5f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x602C 5960 bytes
font_01_sfnt_off00007462.bin
483a7f173098f9224ce2681b79559e0f9abfe8f2ebccdbfb9feafb2660b297fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7462 10048 bytes