Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee4fc5a6379a3024…

MALICIOUS

PDF

47.1 KB Created: 2020-08-19 01:21:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731c76f2cd04b58e3267bc06a63f5e38 SHA-1: acbcf419d7f3f7cb9a1663e7c63c30af47aaced7 SHA-256: ee4fc5a6379a302401ef747e54094a6244488df78f6102cf215fe1efd9924873
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing attempt. The primary malicious URL identified is ttraff.ru, which is known for redirecting to malicious content. The document body contains garbled text and a reference to the malicious URL, further supporting its malicious nature. No scripts were extracted, and the PDF structure itself does not indicate specific exploitation techniques beyond link redirection.

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.ru/pify?keyword=song+lollipop+lagelu+remix
    • http://files.hartassoc-consulting.com/uploads/1/3/0/7/130738562/e434ae3.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/sylvania_automotive_headlight_replacement_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/jatarofawax.pdf
    • https://cdn.shopify.com/s/files/1/0436/2603/7411/files/wozinawokefu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/77171591642.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/79835960679.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/romiket.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/92977826592.pdf
    • https://cdn.shopify.com/s/files/1/0438/6593/1936/files/wesevekuduzerumevuzotabad.pdf
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/tokilafilatusewuvujer.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2245/files/94._9_tampa_radio.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/national_buckeye_scholarship.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000583b.bin
20d57dcd9c26d357108cc0bd290547c132e2090d9eeb5dc65c0b33556150b818		 pdf-font-stream PDF embedded font (sfnt) at offset 0x583B 4932 bytes
font_01_sfnt_off000068dd.bin
6ada75b32d9b936ff7cd386f93b6efcac2cebe2d2af1edfdcd4ccd3e634723f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DD 14176 bytes
font_02_sfnt_off00009559.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9559 4324 bytes
font_03_sfnt_off0000a35a.bin
a887500a8381a31bcd00553e5bec8668d40abdfc2fe4969f1d25cf9d843f21a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA35A 2944 bytes

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