Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7b834b12ec0700…

MALICIOUS

PDF

42.3 KB Created: 2020-08-19 23:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c958d9cbf9b5ea9afcaf8da24f02623 SHA-1: 59c1a443cd1ff6291a407da0f8168b124da0bdac SHA-256: fc7b834b12ec0700d0d6944ad74aa01fc36bcae884d86196d51229229e54c9e0
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=android+app+development+pdf+2019'. This indicates a social engineering lure, likely aiming to trick users into visiting a malicious site by disguising it as a relevant document. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting other PDFs. No scripts were extracted from this sample.

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=android+app+development+pdf+2019
    • http://tujarixe.snowangelsiberians.com/uploads/1/3/0/7/130776447/6959540.pdf
    • http://files.rolesvillehsptsa.com/uploads/1/3/1/3/131381919/rirerejevazudi-luzenadur-tinupawu-vuxoxifas.pdf
    • http://januvof.mackatak.net/uploads/1/3/0/7/130776260/rijurasugozu.pdf
    • http://files.jessicaleemanton.com/uploads/1/3/1/3/131384797/265a1962db2.pdf
    • http://files.nuclearwarfare.de/uploads/1/3/2/6/132695601/8713041.pdf
    • https://cdn.shopify.com/s/files/1/0440/5837/8392/files/bixowejebobuwezekarawom.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/dafanavavigoveraxovunabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/22763646810.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/36672101098.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/hadees_book_download_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5221/9030/files/admirvel_mundo_novo_biblioteca_azul.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/rikijomujologizuxikeged.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/81903458313.pdf
    • https://cdn.shopify.com/s/files/1/0463/0455/9261/files/49565957967.pdf
    • https://cdn.shopify.com/s/files/1/0431/2557/1733/files/93720361671.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/gepinedom.pdf
    • https://cdn.shopify.com/s/files/1/0436/9471/9131/files/17821641667.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8890/files/role_of_branding_in_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0438/5934/5573/files/16602105649.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_off000065b8.bin
0c60532ab589d5e199dcceb80a90adc48f1a6940fb71f9843d9c613d431942e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x65B8 5540 bytes
font_01_sfnt_off00007889.bin
d0e6fbb62a5b3e606493d17fe1d08de8e126e05fcaf4fbc01f521ae99862f9d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7889 10576 bytes