Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e57c2cf9bacc471…

MALICIOUS

PDF

57.9 KB Created: 2020-08-08 04:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aee75251c2038b38f95f9cab0fcc268 SHA-1: b8775305e9bea9daedbb351d06f8aed8118bdec3 SHA-256: 8e57c2cf9bacc471b770178f46965bc0f7740d11e5ad5bbc12b61afbb923cec5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'conveyor belt parts description pdf' and includes the malicious URL. This suggests a phishing or scam attempt where the user is tricked into clicking a link that leads to malicious 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=conveyor+belt+parts+description+pdf
    • http://files.qigongchristchurch.org/uploads/1/3/1/3/131383486/fudupiwav_ladow.pdf
    • http://files.stuartalexanderdental.com/uploads/1/3/0/7/130740563/zadijobumezafer_zikuxumakigade_jimavim.pdf
    • http://files.bengoughbulletin.com/uploads/1/3/1/8/131856919/5675309.pdf
    • https://cdn.shopify.com/s/files/1/0438/3863/6192/files/accident_incident_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4344/files/panuxomisiwadil.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/65121003501.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/zubanerif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3365514284.pdf
    • https://cdn.shopify.com/s/files/1/0433/9843/0876/files/cdl_air_brakes_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jobevemavesofidubuxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/77654421744.pdf
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/berokivomer.pdf
    • https://cdn.shopify.com/s/files/1/0438/3146/0002/files/zajuwitoziduko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pitoparejiki.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_off000092c3.bin
5b7683180386e4bcaa9394baef6212aaa6979912d7c8b3c33541393f941d7ba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92C3 5260 bytes
font_01_sfnt_off0000a4b6.bin
4d1704f840e866f646041cbb206cdbc5212d1f80be3b0b7b2df0fdce8260b6e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B6 12512 bytes
font_02_sfnt_off0000ccd4.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD4 4324 bytes

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