Malicious PDF — malware analysis report

Static analysis result for SHA-256 21aeadc429a30691…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 05:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52b5839793549f9163e7c84c69cf08c7 SHA-1: 70f6cdad2891aba02177034b8305c51b64a75b8d SHA-256: 21aeadc429a30691c7e3a950d51f622b34e1ec449f891f9cbdbfc11007422942
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though partially corrupted, includes keywords related to 'add bookmarks to pdf free mac', suggesting a lure to trick users into clicking the malicious URL. The primary malicious URL identified is https://ttraff.com/pify?keyword=add+bookmarks+to+pdf+free+mac.

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=add+bookmarks+to+pdf+free+mac
    • http://files.cramericonstruction.com/uploads/1/3/1/0/131070420/f1662e4a8694e2.pdf
    • http://files.owlacorn.com/uploads/1/3/1/4/131437362/624b2.pdf
    • http://files.barrons-institutional.com/uploads/1/3/2/6/132681891/zumegijosuwigiloto.pdf
    • http://sunejivi.missouriinstituteofhypnotherapy.com/uploads/1/3/1/8/131871674/1423707.pdf
    • http://pejad.olqpmd.org/uploads/1/3/1/6/131606552/2180822.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/70214597175.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/foxetokedojem.pdf
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/89440098155.pdf
    • https://cdn.shopify.com/s/files/1/0435/4496/9365/files/beethoven_piano_sonata_5.pdf
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/85503434402.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/zerij.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/undang_undang_dasar_1945_sebelum_dan_sesudah_amandemen.pdf
    • https://cdn.shopify.com/s/files/1/0430/5233/5255/files/analysis_and_design_of_algorithms.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/kukavanupuva.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1288/files/24132539667.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.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_off000068e6.bin
dcb68e05a8e77440bcf4b3e101e4e57260f136cd81278ec4ee8e5aee203da90a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E6 5464 bytes
font_01_sfnt_off00007b63.bin
8b358f2361067fee5e94909a0069f6f49639fa8c720d8e6c8b08b1f3eba1063b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B63 9968 bytes

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