Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ce74bd6ca45f32…

MALICIOUS

PDF

106.2 KB Created: 2020-08-06 11:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1707153e3be29bd9eb663037f45ec77 SHA-1: e6620a4c04e1475f999913e6ac02415bc1b00a95 SHA-256: f5ce74bd6ca45f3285e53af3920ee770a49edc75fa4b59ac3050927925bb1ba6
128 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, specifically a redirector link to ttraff.com and a link farm of external PDFs. The presence of a 'download button' lure further supports a phishing or redirection attack. The primary malicious IOC is the redirector URL, which is likely used to funnel users to a malicious site.

Heuristics 4

  • 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.
  • 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.com/pify?keyword=aihw+determinants+of+health+pdf
    • http://files.mhcustomhomes.com/uploads/1/3/1/8/131871871/pemogaminape_vasobo_xegetitobavonow.pdf
    • http://galuze.campblodgett.org/uploads/1/3/1/0/131070604/mujegomuge-lubotilidir.pdf
    • http://files.goodworksbuilding.com/uploads/1/3/0/8/130814118/7899144.pdf
    • http://files.snapshotsbylw.com/uploads/1/3/2/7/132710676/43ff842ad.pdf
    • http://pejuwa.dynamicsolutionsforchange.com/uploads/1/3/0/7/130776791/tebuvakukizowomixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/83826293359.pdf
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/79677027423.pdf
    • https://cdn.shopify.com/s/files/1/0438/4063/5042/files/android_home_environment_variable.pdf
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/70368182983.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7878/6965/files/82228883212.pdf
    • https://cdn.shopify.com/s/files/1/0433/4206/9918/files/8561952884.pdf
    • https://cdn.shopify.com/s/files/1/0435/9982/3016/files/jinejikajogizofofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5816/6949/files/assembly_language_step_by_step_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/pimewuzegapovemil.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0490/files/55683151893.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_off00016515.bin
a05d51e41901d399bacbe9f884355c501843d758983d544766d59b3539402c04
pdf-font-stream PDF embedded font (sfnt) at offset 0x16515 5364 bytes
font_01_sfnt_off00017734.bin
d931a730fe4dead9bed82aa594e09d9f9d3cd0440cd1084c0264e3ed9a718328
pdf-font-stream PDF embedded font (sfnt) at offset 0x17734 10580 bytes