Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0f25f2afeeadba…

MALICIOUS

PDF

43.8 KB Created: 2020-08-22 03:13:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa243409a4ca1cb55ba3132977b86577 SHA-1: 4995ef9c1df2fd13bb340212d40630fc2093f209 SHA-256: 4a0f25f2afeeadbacbd6035c6f49a4c285e57c39ce8405a1011e4714d78b4cff
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript and multiple external links, including a malicious redirector. The document body and heuristics strongly indicate an advance-fee scam, luring the user with a fake guide and a download button to a malicious redirector. The redirector likely leads to further stages of the scam or malware delivery.

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.ru/pify?keyword=ibps+guide+editorial+july+2019
    • http://bigev.incolorartgallery.com/uploads/1/3/1/3/131384771/dekewiwodutawev-tenumino-diwoxewonozomum-tiguputa.pdf
    • http://files.melissafloresdesigns.com/uploads/1/3/0/8/130814283/pusuxokakizadusirav.pdf
    • http://javivo.stampgeneral.com/uploads/1/3/0/7/130775735/ec01e5.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/bupozemid.pdf
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/29439383024.pdf
    • https://cdn.shopify.com/s/files/1/0438/2107/2541/files/7561005735.pdf
    • https://cdn.shopify.com/s/files/1/0454/7398/8774/files/81952913637.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/linfoma_de_burkitt_y_vih.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/kukekuwekewakeme.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/furomazoraw.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/90640886332.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/rabujo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2288/3735/files/vepabedabanezizodalisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/86954158828.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_off00006a92.bin
877f6dc49a618c7ea04173959a4c5ee015fdbf0dbd4907a4d3592e82233eaf8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A92 5864 bytes
font_01_sfnt_off00007e95.bin
316a3e18445b4097cf19c2f6d89130443d42a2bff174c58e05e715f90129c9f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E95 10588 bytes