Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5e6482ea251886…

MALICIOUS

PDF

103.7 KB Created: 2020-08-05 18:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c8ec0ee7c7ec517650c58720ec29a8f SHA-1: dc6b975d7271519c04fad732074fc7ec32786c0c SHA-256: de5e6482ea25188687f2ba6b2e8748042bee4c95197fed8662fd192d57cb4bae
130 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.com, which is likely used to obscure the final destination. The document body contains urgency lures, further suggesting a malicious intent to trick the user into clicking the links. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=20+amino+acids+list+pdf
    • http://files.ammosfilms.eu/uploads/1/3/0/7/130739789/gisomu-tozomogasemos.pdf
    • http://files.offerup-item-details9480298.com/uploads/1/3/1/8/131871518/renana.pdf
    • http://renefase.contigodevelopment.com/uploads/1/3/1/4/131438177/nedinubimugunat.pdf
    • http://files.littlerocklabradors.ca/uploads/1/3/2/7/132740415/joxota.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/sezeregonenafazopevut.pdf
    • https://cdn.shopify.com/s/files/1/0430/7622/3129/files/73440672054.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/49062844069.pdf
    • https://cdn.shopify.com/s/files/1/0430/4732/1751/files/4501482164.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/maxularosonan.pdf
    • https://cdn.shopify.com/s/files/1/0436/9845/4682/files/nidini.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/vekapevedeluxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/assassins_creed_2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/tujupagobomijivajofimowo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/33687287432.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/59898855693.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/neledakixamifu.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_off000155d7.bin
6b682e6f27db036670bc2c7892fa00c127b9bcc477fcb23a869aee1de6fecb84
pdf-font-stream PDF embedded font (sfnt) at offset 0x155D7 5384 bytes
font_01_sfnt_off00016818.bin
0cd6205fb6fffb3a347ff9bf2ec7922411ca582620371af51c645a7ccba1315b
pdf-font-stream PDF embedded font (sfnt) at offset 0x16818 12568 bytes