Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2907352194cb5b4…

MALICIOUS

PDF

40.7 KB Created: 2020-08-13 01:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91142ce1da23b91e28bc27dd202e6e38 SHA-1: 425b412c639635476b4ffb8d875c436617b1aa90 SHA-256: d2907352194cb5b4cb043381fc02945f59e2fe7a90649a3b4b56d5c902876348
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link is presented as a download for a datasheet, indicating a social engineering lure. The file also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm tactics used to obscure malicious destinations. No scripts were extracted, but the primary intent appears to be directing the user to a malicious URL.

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/wb?keyword=c828%20transistor%20datasheet%20.pdf%20download
    • http://files.saikmusic.org/uploads/1/3/2/7/132740415/67c8893d65fe7.pdf
    • http://beraveb.kristalynshefveland.com/uploads/1/3/1/1/131164048/fafilek_xowaw.pdf
    • http://xewoxigor.ruinenjunkie.com/uploads/1/3/1/3/131384279/9735354.pdf
    • https://cdn.shopify.com/s/files/1/0429/1228/4831/files/when_your_good_to_mama_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/volobovov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/bloodborne_stake_driver.pdf
    • https://cdn.shopify.com/s/files/1/0437/8814/0696/files/bugofakusuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0177/files/bible_stories_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/vevibidovidazinerorir.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9966/files/xitovuleronem.pdf
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/medicinal_chemistry_alagarsamy_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/waxesoviwekixuves.pdf
    • https://cdn.shopify.com/s/files/1/0438/6773/4171/files/allison_mt643_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0451/6282/3834/files/jurnal_sejarah_asia_selatan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/gidobufomomi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.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
font_00_sfnt_off0000519a.bin
60b3fc4347580d9872393fea717d940d9750086b587a515ccd450c870b603290
pdf-font-stream PDF embedded font (sfnt) at offset 0x519A 5392 bytes
font_01_sfnt_off000063f5.bin
af8aec9fa333c46aba97cbce268773262f4fa66cde903cf5ee4acc9159aa65c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x63F5 10416 bytes
font_02_sfnt_off000087a2.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x87A2 4324 bytes