Malicious PDF — malware analysis report

Static analysis result for SHA-256 95114df244ca53e1…

MALICIOUS

PDF

47.8 KB Created: 2020-08-10 15:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 813a1d78d87f7ad2db542b635b1f07b3 SHA-1: 44bc03a0ce6cd239fe7df068b300db5aa83c4c2e SHA-256: 95114df244ca53e1a827f25851b749e049ab90bc5766f538a32b9761d86952be
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Agriculture books pdf in urdu' and the malicious URL itself, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many pointing to benign Shopify URLs, likely part of a link farm to improve SEO for the malicious redirector. 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=agriculture+books+pdf+in+urdu
    • http://zisosip.triplecrownlacrosse.com/uploads/1/3/0/7/130776445/d0c20.pdf
    • http://files.virtualqe.com/uploads/1/3/2/7/132710627/jikonurafumubapi.pdf
    • http://files.fairyringschool.org/uploads/1/3/1/4/131437889/5486c9027237cdc.pdf
    • https://cdn.shopify.com/s/files/1/0428/6906/3836/files/41029347574.pdf
    • https://cdn.shopify.com/s/files/1/0435/9625/1304/files/36012994385.pdf
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/suzatikeziterisuwejibago.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/36922746906.pdf
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/tuwanibolibowojulamozor.pdf
    • https://cdn.shopify.com/s/files/1/0440/7004/3813/files/8882257390.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/22587118737.pdf
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/99145322597.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/57520676158.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/open_veins_of_latin_america_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/88318470189.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/nunaxuragopixit.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
stream_005_off00008c52.bin
476ff1e23e08b8b81623350449d8e17c7ca49a4fadb6d493e958291bf100eba5
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8C52 22288 bytes
font_00_sfnt_off000057d6.bin
ece1efff3c9773f958753a16e41ed0daf79defb450fb0d6b4b6456cce748be64
pdf-font-stream PDF embedded font (sfnt) at offset 0x57D6 5308 bytes
font_01_sfnt_off000069ef.bin
e911e70554f5b453a31cdb2bd9bce10b2d21fb7ecb39e4427663e5fe451d7bc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x69EF 10128 bytes