Malicious PDF — malware analysis report

Static analysis result for SHA-256 284e843a9dc41ce9…

MALICIOUS

PDF

50.7 KB Created: 2020-08-14 07:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7df0a7f8c21e8ea30f837d46c08f6e9e SHA-1: a2562427ef4a334c41f52eba6434022fcf8732e1 SHA-256: 284e843a9dc41ce914f9ee3b1aa33d602f1a861c27973e5710a439bcc0490ce4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary link, https://ttraff.cc/pify?keyword=example+introduction+for+biology+lab+report, is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to academic reports and includes the same malicious URL, suggesting a lure to a malicious site.

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=example+introduction+for+biology+lab+report
    • http://files.pitchperfectok.com/uploads/1/3/1/6/131637553/joxagoxiwuferijef.pdf
    • http://files.aeinstructional.com/uploads/1/3/1/8/131872273/kamakijifofogole.pdf
    • http://fukubudap.bqpublishing.com/uploads/1/3/1/0/131071021/aa839a1b87.pdf
    • https://cdn.shopify.com/s/files/1/0435/0253/4822/files/satyanarayana_biochemistry_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0451/9470/7095/files/pepsi_logo_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0431/0469/8535/files/one_ring_rpg.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/anabasis_trke.pdf
    • https://cdn.shopify.com/s/files/1/0432/6883/3436/files/39643707179.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/archivo_ingles_a_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/27638517895.pdf
    • https://cdn.shopify.com/s/files/1/0454/6861/4808/files/sociolinguistics_and_language_teaching_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4624/files/hot_springs_spa_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/nukobesebaxokejutazubev.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9759/files/kotisutezigo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/83162853865.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/69472129680.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_off00007035.bin
3cbc3710fc7cb70167341281e3faada74fa0e33288699a7dffeb0f4c1bc2277a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 5564 bytes
font_01_sfnt_off0000831b.bin
13e827d7cee22ebc3e399462cd7c6db821838ec0cd013a367d59fe3b189349e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x831B 10512 bytes
font_02_sfnt_off0000a6ec.bin
c4483d0a2685d558df97df6ba840746f2870e6254d6d5d8edd69700eac20a654
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EC 16328 bytes