Malicious PDF — malware analysis report

Static analysis result for SHA-256 48824d2e0d91b5c1…

MALICIOUS

PDF

45.8 KB Created: 2020-08-24 15:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ddc4802b9614140080122915fa83121 SHA-1: b0197e1b500ecaa098b98cf4c62d4af7b2937bf8 SHA-256: 48824d2e0d91b5c136cfdb379e587c2e50c05d9b5d464a4c349bcb28c2c4f0d5
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though partially obfuscated, contains the same text as the URL's keyword parameter, suggesting a lure. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for the malicious content.

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=adrenaline+junkies+and+template+zombies+pdf
    • http://files.busdox.com/uploads/1/3/1/4/131407968/1504428.pdf
    • http://files.cleanerthanyou.com/uploads/1/3/1/4/131483138/kemajuwipuw.pdf
    • http://files.barnfullofequines.com/uploads/1/3/0/7/130776819/4606726.pdf
    • http://files.clemensclassroom.com/uploads/1/3/1/4/131406558/pabowesimime_runenuzevik_luvepan.pdf
    • https://cdn.shopify.com/s/files/1/0427/9789/1751/files/4277724155.pdf
    • https://cdn.shopify.com/s/files/1/0438/0740/8290/files/78784690959.pdf
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/14649236657.pdf
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/lagu_bandung_lautan_api.pdf
    • https://cdn.shopify.com/s/files/1/0430/1350/5185/files/57157273654.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/fidukopewijisude.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9632/files/jevewadexasasasibagezojiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/dasedunujarumawo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/81620004089.pdf
    • https://cdn.shopify.com/s/files/1/0447/1940/7257/files/2020_uae_calendar_with_holidays.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/82923281601.pdf
    • https://cdn.shopify.com/s/files/1/0437/4629/5959/files/90210001723.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitadekekogog.pdf
    • https://cdn.shopify.com/s/files/1/0435/5974/7745/files/big_book_of_nursery_rhymes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4572/4055/files/vurowolejasuxetugeli.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_off0000738b.bin
4e72203bc352c1d79ee2e799aa69d98b041f4ecca6638338ad5710a199ac5bed
pdf-font-stream PDF embedded font (sfnt) at offset 0x738B 5508 bytes
font_01_sfnt_off00008632.bin
bd460a459c062112299fe3f95aa8ae95dbb04ce74ed5bdc58453a62e03c7483e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8632 10500 bytes