Malicious PDF — malware analysis report

Static analysis result for SHA-256 98662acfabe122f9…

MALICIOUS

PDF

46.0 KB Created: 2020-08-05 09:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 576d7f65dc5b4d7e2d537e5e6e28363c SHA-1: 64281d662c2185da7a58c41664adb7553da870cb SHA-256: 98662acfabe122f97f6cd6b1993be7b4e464f61f5b3add2f8043be8cbfda3d3d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggers this heuristic. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning. The primary attack vector appears to be social engineering via a deceptive document title, leading users 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.com/pify?keyword=bartleby+the+scrivener+t%25C3%25BCrk%25C3%25A7e+pdf
    • http://files.baitboatkit.com/uploads/1/3/1/8/131872054/6eca82a07a99891.pdf
    • http://files.constanzohistory.com/uploads/1/3/1/8/131858044/8904037.pdf
    • http://files.motivationalmowing.com/uploads/1/3/2/7/132740214/7673697.pdf
    • http://files.elisabethlagrone.com/uploads/1/3/2/3/132303270/tusexop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuxevitilikibuvenimomabu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/31604987781.pdf
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/oceanofpdf_new_site.pdf
    • https://cdn.shopify.com/s/files/1/0432/2761/1300/files/516399124.pdf
    • https://cdn.shopify.com/s/files/1/0433/7260/9686/files/18756978701.pdf
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/zawudubomu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.pdf
    • https://cdn.shopify.com/s/files/1/0437/4216/7194/files/petsafe_in_ground_fence_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/1937/0659/files/razifibegu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1248/8343/files/27446675986.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/instagram_video_converter.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/89078549757.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_off00006376.bin
69053ba6373f4b2122f1361aebd8f951fff2ec0e9e2dbf27e9c45cd5554a73f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6376 5640 bytes
font_01_sfnt_off0000765a.bin
75cc3c68619935cbbc13d119deb2cf4f89d1930ee07fe718c27037421fd6aa62
pdf-font-stream PDF embedded font (sfnt) at offset 0x765A 11656 bytes
font_02_sfnt_off00009ab8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB8 4324 bytes