Malicious PDF — malware analysis report

Static analysis result for SHA-256 3772ab0f1f7149d2…

MALICIOUS

PDF

37.3 KB Created: 2020-08-08 05:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 499a1fb5521e9d5f59af89bdf867d582 SHA-1: 085bdc25871255fc330c282ab40eee0fd9927167 SHA-256: 3772ab0f1f7149d2eb94a00e373a52706310f7210ceed0981197fda32a299f36
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. The primary link, https://ttraff.com/pify?keyword=constitui%25C3%25A7%25C3%25A3o+do+estado+de+alagoas+pdf, points to a known malicious redirector. This suggests the document's purpose is to lure users to malicious websites, likely for phishing or malware distribution, rather than providing legitimate 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.com/pify?keyword=constitui%25C3%25A7%25C3%25A3o+do+estado+de+alagoas+pdf
    • http://files.catcaricature.studio/uploads/1/3/1/3/131397950/jowededevamajen-jafugejejomisi.pdf
    • http://files.clarksvillemusic.com/uploads/1/3/2/6/132680932/jufuroneg.pdf
    • http://files.aishasuniquecosmetics.com/uploads/1/3/1/8/131871494/wifevuv.pdf
    • http://files.aliveandwellband.com/uploads/1/3/0/7/130775859/muduvozajuj.pdf
    • http://files.metrolifesafety.com/uploads/1/3/1/8/131872055/desoki.pdf
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/pobesurizovasuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/90348824517.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/43671074769.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/65401062747.pdf
    • https://cdn.shopify.com/s/files/1/0436/3023/1712/files/5265882041.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/12485874061.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/82684129544.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/rulasa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/90536266142.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/botititurinibil.pdf
    • https://cdn.shopify.com/s/files/1/0435/3146/8951/files/udp_tracker_openbittorrent_com_80.pdf
    • https://cdn.shopify.com/s/files/1/0447/5614/0186/files/biological_classification_ncert_book.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_off00004d62.bin
142a3c89848fa4c9abe77a1ff37411d01f25e752d55a0a2631850a8820ebd2ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D62 5520 bytes
font_01_sfnt_off00005fab.bin
eec6fcb78fab7e40b94d1ac988dcdccff3c65079b0f410e9339d4874d0fe7351		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAB 12452 bytes

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