Malicious PDF — malware analysis report

Static analysis result for SHA-256 d953382a192687db…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 15:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6efdc13caa340846eeb33ee4460297e6 SHA-1: e356a9f424ccfafd604d1a11a3a30ed6832d3b4c SHA-256: d953382a192687dba31c286264c784f1ce5ad8dad91e46475996ccba3ee81e44
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, constituting a link farm, with one URL identified as a malicious redirector. The presence of a call-to-action phrase suggests a lure to encourage users to click these links. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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.ru/pify?keyword=decadry+label+template
    • http://files.mydtronic.com/uploads/1/3/0/8/130873728/7a3b9.pdf
    • http://files.loneforestwolfphotography.com/uploads/1/3/0/7/130776486/weloritofikuke.pdf
    • http://pedokumar.peneloperosecowley.com/uploads/1/3/0/7/130776508/ad0f7587393.pdf
    • http://files.weaitmusic.com/uploads/1/3/1/3/131378993/6432427.pdf
    • http://files.opticalequipmentstore.com/uploads/1/3/1/4/131409794/9328976.pdf
    • https://cdn.shopify.com/s/files/1/0435/9575/9779/files/la_derrota_del_neoliberalismo_en_bolivia.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/79408003833.pdf
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/unblock_phone_numbers_on_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/91904541891.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/zuwekolunegenujoki.pdf
    • https://cdn.shopify.com/s/files/1/0438/3001/8210/files/discord_color_code_block.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/58427128789.pdf
    • https://cdn.shopify.com/s/files/1/0435/1954/1416/files/mutofonazubabopeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8705/files/bwv_1001_presto_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/venavamowawigevoxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/mahouka_koukou_no_rettousei_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/birds_photos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90296180399.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_off000059de.bin
98b3b9cfceb81bf62c6890e360c0eadce0aae5583f1271f007a1788ee8bd2900
pdf-font-stream PDF embedded font (sfnt) at offset 0x59DE 5280 bytes
font_01_sfnt_off00006bbd.bin
1bf6d3de77c4124e89e2c1a188c0a7af819901de82598221d312c09e3b3ee6be
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBD 10208 bytes