Malicious PDF — malware analysis report

Static analysis result for SHA-256 433952f9168632df…

MALICIOUS

PDF

53.8 KB Created: 2020-08-14 00:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97eb92b87a2ddd7e8bd3d6ff1e12e6d9 SHA-1: bff31b1cc09d788eaf28853c3523b5d9365b8250 SHA-256: 433952f9168632df2eae01be8a36cb6396c818092fabf541cd43ee1587b56464
160 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of an advance-fee scam. The document body, though heavily obfuscated, contains text related to insurance companies and a URL that is flagged as a malicious redirector. This suggests the document's purpose is to trick the user into clicking the malicious link, likely leading to further malicious content or a phishing 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.
  • 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 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=am+best+rating+guide+for+insurance+companies
    • http://files.gotlibtennis.com/uploads/1/3/1/0/131071082/002830ef.pdf
    • http://kunajo.thecuriouskind.org/uploads/1/3/0/9/130969352/padapekusawexet.pdf
    • http://files.bluenosewoodworks.com/uploads/1/3/2/8/132815961/somokirolurujewikusi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/vexojonekoguzof.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/28760542024.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/60415964981.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3656/files/biolite_net_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/gekimamozivumewapusobexix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdf
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/is_webm_better_than_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0438/5033/4368/files/kuensel_calendar_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/34064064717.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/pifos.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/nelikezojeruwafofadiguj.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/35479424052.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/92600750513.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kozaw.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_off00008382.bin
0ccf7345a1346fa3c72441fdb5e6f59332ff9d6a7af6ae694c4cc7ec5da91130
pdf-font-stream PDF embedded font (sfnt) at offset 0x8382 5452 bytes
font_01_sfnt_off000095ef.bin
557155232b58e7a2e8a113f6aebffffaa8294c7428b15c37ed801c7d39f79123
pdf-font-stream PDF embedded font (sfnt) at offset 0x95EF 11580 bytes
font_02_sfnt_off0000bb2d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2D 4324 bytes