Malicious PDF — malware analysis report

Static analysis result for SHA-256 39be3e1e9d3abeb9…

MALICIOUS

PDF

48.8 KB Created: 2020-08-13 13:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6af5f772121cad3a8b4e3bd1975212ee SHA-1: eb1b5a680770a3d9eea1295eb7c81ab432898b50 SHA-256: 39be3e1e9d3abeb9e30b0df8fc28988eee944d4790514ea0e58a659fb4645813
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is https://ttraff.cc/wb?keyword=les%20milieux%20de%20culture%20microbienne%20pdf, which is likely used to redirect users to a phishing or malware-hosting site.

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.cc/wb?keyword=les%20milieux%20de%20culture%20microbienne%20pdf
    • http://vafisepul.wspkiwanis.org/uploads/1/3/1/0/131069915/komeselomobijeg.pdf
    • http://files.docksideengraving.com/uploads/1/3/2/7/132740519/saxekisod.pdf
    • http://files.nb-peiponyclub.com/uploads/1/3/1/3/131378942/sidepes_wisago_gotipudopitu_timizesanez.pdf
    • http://jazado.rsmpdsg.com/uploads/1/3/1/4/131406286/turupidadupowa.pdf
    • http://files.josephberryinteriors.co.uk/uploads/1/3/0/8/130815303/1aa901760fbd8f.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/31506514966.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/poponoxuzewokeras.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/tifumujebut.pdf
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/tesda_bookkeeping_exam_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/kagaverokikot.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/caballo_de_troya_1_libros_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/xuzomuwamunovalo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/windows_longhorn_sounds.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/xedegozezutubixemuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/3.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3571/files/78918643368.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/xezunotamamoroxije.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/53979544697.pdf
    • https://cdn.shopify.com/s/files/1/0435/6515/4463/files/yasin_dan_tahlil_rumi.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_off00006f04.bin
7b9586282103414ee58d04ce216663464e84ae85c055f569d0f7936282163817
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F04 5120 bytes
font_01_sfnt_off0000804e.bin
d0d8a20b1f8af3914f28fc6b5969b30356ebcba2bc4281cd5a5a5685541559e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x804E 11812 bytes
font_02_sfnt_off0000a622.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd
pdf-font-stream PDF embedded font (sfnt) at offset 0xA622 4324 bytes