Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc706492b6d5b9df…

MALICIOUS

PDF

79.0 KB Created: 2020-08-18 22:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74a2e43f622fea9976041b6e2a745c14 SHA-1: 11c424165ad8bba4145db9dc7a0f7d1e4d07d808 SHA-256: cc706492b6d5b9df7753b2ba32f1d4a75e2091989b4711aa638026de585ddaa3
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=blockbuster+dj+song, which is likely used to obscure the final malicious destination. The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing attacks.

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/pify?keyword=blockbuster+dj+song
    • http://files.scribblegardencafe.com/uploads/1/3/1/1/131164081/fevuda_pumisod_xanuwo_gaziv.pdf
    • http://dunip.napleselementary.org/uploads/1/3/0/7/130775440/nodap.pdf
    • http://files.namimnwashingtoncounty.org/uploads/1/3/1/0/131070230/3992950.pdf
    • http://bonez.pandlcarcare.com/uploads/1/3/2/7/132741593/b0a06b453a5a8.pdf
    • http://vidumitiz.syrinxmusicalinstruments.com/uploads/1/3/0/7/130738629/gipasukojijiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4542/files/14399041185.pdf
    • https://cdn.shopify.com/s/files/1/0433/9335/1843/files/893262687.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3406/files/watavotumutosusib.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/52647320503.pdf
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/mubenotimipiremumixe.pdf
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/list_of_arabic_nouns.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/48443746413.pdf
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/97592563716.pdf
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/9283553582.pdf
    • https://cdn.shopify.com/s/files/1/0440/1666/4734/files/38849436641.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5772/files/tattoo_release_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/bhai_movie_ke_gane.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7f3.bin
e45243e7f2211859c0a5d54ce7ce1c48e5975266a9bcda3eaa545cdb8303f653
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F3 5224 bytes
font_01_sfnt_off000109c5.bin
3b8bcd8cdc77c687e7693537e002386064fba356f0c9dc0fbce265a144c979c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x109C5 15024 bytes